Compositions and methods relating to DNA mismatch repair genes

ABSTRACT

Genomic sequences of human mismatch repair genes are described, as are methods of detecting mutations and/or polymorphisms in those genes. Also described are methods of diagnosing cancer susceptibility in a subject, and methods of identifying and classifying mismatch-repair-defective tumors. In particular, sequences and methods relating to human mutL homologs, hMLH1 and hPMS1 genes are provided.

This application is a continuation-in-part from U.S. patent application Ser. No. 08/209,521, titled: MAMMALIAN DNA MISMATCH REPAIR GENES PMS1 AND MLH1, filed on Mar. 8, 1994, U.S. Pat. No. 5,922,855 which is a continuation-in-part from U.S. patent application Ser. No. 08/168,877, filed on Dec. 17, 1993, abandoned. All of the above patent applications are incorporated by reference.

This invention was made with government support under Agreement No. GM 32741 and Agreement No. HG00395/GM50006 awarded by the National Institute of Health in the General Sciences Division. The government has certain rights in the invention.

FIELD OF THE INVENTION

The present invention involves DNA mismatch repair genes. In particular, the invention relates to identification of mutations and polymorphisms in DNA mismatch repair genes, to identification and characterization of DNA mismatch-repair-defective tumors, and to detection of genetic susceptibility to cancer.

BACKGROUND

In recent years, with the development of powerful cloning and amplification techniques such as the polymerase chain reaction (PCR), in combination with a rapidly accumulating body of information concerning the structure and location of numerous human genes and markers, it has become practical and advisable to collect and analyze samples of DNA or RNA from individuals who are members of families which are identified as exhibiting a high frequency of certain genetically transmitted disorders. For example, screening procedures are routinely used to screen for genes involved in sickle cell anemia, cystic fibrosis, fragile X chromosome syndrome and multiple sclerosis. For some types of disorders, early diagnosis can greatly improve the person's long-term prognosis by, for example, adopting an aggressive diagnostic routine, and/or by making life style changes if appropriate to either prevent or prepare for an anticipated problem.

Once a particular human gene mutation is identified and linked to a disease, development of screening procedures to identify high-risk individuals can be relatively straight forward. For example, after the structure and abnormal phenotypic role of the mutant gene are understood, it is possible to design primers for use in PCR to obtain amplified quantities of the gene from individuals for testing. However, initial discovery of a mutant gene, i.e., its structure, location and linkage with a known inherited health problem, requires substantial experimental effort and creative research strategies.

One approach to discovering the role of a mutant gene in causing a disease begins with clinical studies on individuals who are in families which exhibit a high frequency of the disease. In these studies, the approximate location of the disease-causing locus is determined indirectly by searching for a chromosome marker which tends to segregate with the locus. A principal limitation of this approach is that, although the approximate genomic location of the gene can be determined, it does not generally allow actual isolation or sequencing of the gene. For example, Lindblom et al.³ reported results of linkage analysis studies performed with SSLP (simple sequence length polymorphism) markers on individuals from a family known to exhibit a high incidence of hereditary non-polyposis colon cancer (HNPCC). Lindblom et al. found a “tight linkage” between a polymorphic marker on the short arm of human chromosome 3 (3p21-23) and a disease locus apparently responsible for increasing an individual's risk of developing colon cancer. Even though 3p21-23 is a fairly specific location relative to the entire genome, it represents a huge DNA region relative to the probable size of the mutant gene. The mutant gene could be separated from the markers identifying the locus by millions of bases. At best, such linkage studies have only limited utility for screening purposes because in order to predict one person's risk, genetic analysis must be performed with tightly linked genetic markers on a number of related individuals in the family. It is often impossible to obtain such information, particularly if affected family members are deceased. Also, informative markers may not exist in the family under analysis. Without knowing the gene's structure, it is not possible to sample, amplify, sequence and determine directly whether an individual carries the mutant gene.

Another approach to discovering a disease-causing mutant gene begins with design and trial of PCR primers, based on known information about the disease, for example, theories for disease state mechanisms, related protein structures and function, possible analogous genes in humans or other species, etc. The objective is to isolate and sequence candidate normal genes which are believed to sometimes occur in mutant forms rendering an individual disease prone. This approach is highly dependent on how much is known about the disease at the molecular level, and on the investigator's ability to construct strategies and methods for finding candidate genes. Association of a mutation in a candidate gene with a disease must ultimately be demonstrated by performing tests on members of a family which exhibits a high incidence of the disease. The most direct and definitive way to confirm such linkage in family studies is to use PCR primers which are designed to amplify portions of the candidate gene in samples collected from the family members. The amplified gene products are then sequenced and compared to the normal gene structure for the purpose of finding and characterizing mutations. A given mutation is ultimately implicated by showing that affected individuals have it while unaffected individuals do not, and that the mutation causes a change in protein function which is not simply a polymorphism.

Another way to show a high probability of linkage between a candidate gene mutation and disease is by determining the chromosome location of the gene, then comparing the gene's map location to known regions of disease-linked loci such as the one identified by Lindblom et al. Coincident map location of a candidate gene in the region of a previously identified disease-linked locus may strongly implicate an association between a mutation in the candidate gene and the disease.

There are other ways to show that mutations in a gene candidate may be linked to the disease. For example, artificially produced mutant forms of the gene can be introduced into animals. Incidence of the disease in animals carrying the mutant gene can then be compared to animals with the normal genotype. Significantly elevated incidence of disease in animals with the mutant genotype, relative to animals with the wild-type gene, may support the theory that mutations in the candidate gene are sometimes responsible for occurrence of the disease.

One type of disease which has recently received much attention because of the discovery of disease-linked gene mutations is Hereditary Nonpolyposis Colon Cancer (HNPCC).^(1,2) Members of HNPCC families also display increased susceptibility to other cancers including endometrial, ovarian, gastric and breast. Approximately 10% of colorectal cancers are believed to be HNPCC. Tumors from HNPCC patients display an unusual genetic defect in which short, repeated DNA sequences, such as the dinucleotide repeat sequences found in human chromosomal DNA (“microsatellite DNA”), appear to be unstable. This genomic instability of short, repeated DNA sequences, sometimes called the “RER+” phenotype, is also observed in a significant proportion of a wide variety of sporadic tumors, suggesting that many sporadic tumors may have acquired mutations that are similar (or identical) to mutations that are inherited in HNPCC.

Genetic linkage studies have identified two HNPCC loci thought to account for as much as 90% of HNPCC. The loci map to human chromosome 2p15-16 (2p21) and 3p21-23. Subsequent studies have identified human DNA mismatch repair gene hMSH2 as being the gene on chromosome 2p21, in which mutations account for a significant fraction of HNPCC cancers.^(1, 2, 12) hMSH2 is one of several genes whose normal function is to identify and correct DNA mispairs including those that follow each round of chromosome replication.

The best defined mismatch repair pathway is the E.coli MutHLS pathway that promotes a long-patch (approximately 3 Kb) excision repair reaction which is dependent on the mutH, mutL, mutS and mutU (uvrD) gene products. The MutHLS pathway appears to be the most active mismatch repair pathway in E.coli and is known to both increase the fidelity of DNA replication and to act on recombination intermediates containing mispaired bases. The system has been reconstituted in vitro, and requires the mutH, mutL, mutS and uvrD (helicase II) proteins along with DNA polymerase III holoenzyme, DNA ligase, single-stranded DNA binding protein (SSB) and one of the single-stranded DNA exonucleases, Exo I, Exo VII or RecJ. hMSH2 is homologous to the bacterial mutS gene. A similar pathway in yeast includes the yeast MSH2 gene and two mutL-like genes referred to as PMS1 and MLH1.

With the knowledge that mutations in a human mutS type gene (hMSH2) sometimes cause cancer, and the discovery that HNPCC tumors exhibit microsatellite DNA instability, interest in other DNA mismatch repair genes and gene products, and their possible roles in HNPCC and/or other cancers, has intensified. It is estimated that as many as 1 in 200 individuals carry a mutation in either the hMSH2 gene or other related genes which encode for other proteins in the same DNA mismatch repair pathway.

An important objective of our work has been to identify human genes which are useful for screening and identifying individuals who are at elevated risk of developing cancer. Other objects are: to determine the sequences of exons and flanking intron structures in such genes; to use the structural information to design testing procedures for the purpose of finding and characterizing mutations which result in an absence of or defect in a gene product which confers cancer susceptibility; and to distinguish such mutations from “harmless” polymorphic variations. Another object is to use the structural information relating to exon and flanking intron sequences of a cancer-linked gene, to diagnose tumor types and prescribe appropriate therapy. Another object is to use the structural information relating to a cancer-linked gene to identify other related candidate human genes for study.

SUMMARY OF THE INVENTION

Based on our knowledge of DNA mismatch repair mechanisms in bacteria and yeast including conservation of mismatch repair genes, we reasoned that human DNA mismatch repair homologs should exist, and that mutations in such homologs affecting protein function, would be likely to cause genetic instability, possibly leading to an increased risk of developing certain forms of human cancer.

We have isolated and sequenced two human genes, hPMS1 and hMLH1 each of which encodes for a protein involved in DNA mismatch repair. hPMS1 and hMLH1 are homologous to mutL genes found in E.coli. Our studies strongly support an association between mutations in DNA mismatch repair genes and susceptibility to HNPCC. Thus, DNA mismatch repair gene sequence information of the present invention, namely, cDNA and genomic structures relating to hMLH1 and hPMS1, make possible a number of useful methods relating to cancer risk determination and diagnosis. The invention also encompasses a large number of nucleotide and protein structures which are useful in such methods.

We mapped the location of hMLH1 to human chromosome 3p21-23. This is a region of the human genome that, based upon family studies, harbors a locus that predisposes individuals to HNPCC. Additionally, we have found a mutation in a conserved region of the hMLH1 cDNA in HNPCC-affected individuals from a Swedish family. The mutation is not found in unaffected individuals from the same family, nor is it a simple polymorphism. We have also found that a homologous mutation in yeast results in a defective DNA mismatch repair protein. We have also found a frameshift mutation in hMLH1 of affected individuals from an English family. Our discovery of a cancer-linked mutations in hMLH1, combined with the gene's map position which is coincident with a previously identified HNPCC-linked locus, plus the likely role of the hMLH1 gene in mutation avoidance makes the hMLH1 gene a prime candidate for underlying one form of common inherited human cancer, and a prime candidate to screen and identify individuals who have an elevated risk of developing cancer.

hMLH1 has 19 exons and 18 introns. We have determined the location of each of the 18 introns relative to hMLH1 cDNA. We have also determined the structure of all intron/exon boundary regions of hMLH1. Knowledge of the intron/exon boundary structures makes possible efficient screening regimes to locate mutations which negatively affect the structure and function of gene products. Further, we have designed complete sets of oligonucleotide primer pairs which can be used in PCR to amplify individual complete exons together with surrounding intron boundary structures.

We mapped the location of hPMS1 to human chromosome 7. Subsequent studies by others³⁹ have confirmed our prediction that mutations in this gene are linked to HNPCC.

The most immediate use of the present invention will be in screening tests on human individuals who are members of families which exhibit an unusually high frequency of early onset cancer, for example HNPCC. Accordingly, one aspect of the invention comprises a method of diagnosing cancer susceptibility in a subject by detecting a mutation in a mismatch repair gene or gene product in a tissue from the subject, wherein the mutation is indicative of the subject's susceptibility to cancer. In a preferred embodiment of the invention, the step of detecting comprises detecting a mutation in a human mutL homolog gene, for example, hMLH1 of hPMS1.

The method of diagnosing preferably comprises the steps of: 1) amplifying a segment of the mismatch repair gene or gene product from an isolated nucleic acid; 2) comparing the amplified segment with an analogous segment of a wild-type allele of the mismatch repair gene or gene product; and 3) detecting a difference between the amplified segment and the analogous segment, the difference being indicative of a mutation in the mismatch repair gene or gene product which confers cancer susceptibility.

Another aspect of the invention provides methods of determining whether the difference between the amplified segment and the analogous wild-type segment causes an affected phenotype, i.e., does the sequence alteration affect the individual's ability to repair DNA mispairs.

The method of diagnosing may include the steps of: 1) reverse transcribing all or a portion of an RNA copy of a DNA mismatch repair gene; and 2) amplifying a segment of the DNA produced by reverse transcription. An amplifying step in the present invention may comprise: selecting a pair of oligonucleotide primers capable of hybridizing to opposite strands of the mismatch repair gene, in an opposite orientation; and performing a polymerase chain reaction utilizing the oligonucleotide primers such that nucleic acid of the mismatch repair chain intervening between the primers is amplified to become the amplified segment.

In preferred embodiments of the methods summarized above, the DNA mismatch repair gene is hMLH1 or hPMS1. The segment of DNA corresponds to a unique portion of a nucleotide sequence selected from the group consisting of SEQ. ID NOS: 6-24. “First stage” oligonucleotide primers selected from the group consisting of SEQ. ID NOS: 44-82 are used in PCR to amplify the DNA segment are . The invention also provides a method of using “second stage” nested primers (SEQ. ID NOS: 83-122), for use with the first stage primers to allow more specific amplification and conservation of template DNA.

Another aspect of the present invention provides a method of identifying and classifying a DNA mismatch repair defective tumor comprising detecting in a tumor a mutation in a mismatch repair gene or gene product, preferably a mutL homolog (hMLH1 or hPMS1), the mutation being indicative of a defect in a mismatch repair system of the tumor.

The present invention also provides useful nucleotide and protein compositions. One such composition is an isolated nucleotide or protein structure including a segment sequentially corresponding to a unique portion of a human mutL homolog gene or gene product, preferably derived from either hMLH1 or hPMS1.

Other composition aspects of the invention comprise oligonucleotide primers capable of being used together in a polymerase chain reaction to amplify specifically a unique segment of a human mutL homolog gene, preferably hMLH1 or hPMS1.

Another aspect of the present invention provides a probe including a nucleotide sequence capable of binding specifically by Watson/Crick pairing to complementary bases in a portion of a human mutL homolog gene; and a label-moiety attached to the sequence, wherein the label-moiety has a property selected from the group consisting of fluorescent, radioactive and chemiluminescent.

We have also isolated and sequenced mouse MLH1 (mMLH1 ) and PMS1 (mPMS1) genes. cDNA structures of the mouse genes mMLH1 and mPMS1 are fully disclosed in the preceeding related patent application Ser. No. 08/209,521. We have used our knowledge of mouse mismatch repair genes to construct animal models for studying cancer. The models will be useful to identify additional oncogenes and to study environmental effects on mutagenesis.

We have produced polyclonal antibodies directed to a portion of the protein encoded by mPMS1 cDNA. The antibodies also react with hPMS1 protein and are useful for detecting the presence of the protein encoded by a normal hPMS1 gene. We are also producing monoclonal antibodies directed to hMLH1 and hPMS1.

In addition to diagnostic and therapeutic uses for the genes, our knowledge of hMLH1 and hPMS1 can be used to search for other genes of related function which are candidates for playing a role in certain forms of human cancer.

DESCRIPTION OF THE FIGURES

FIG. 1 is a flow chart showing an overview of the sequence of experimental steps we used to isolate, characterize and use human and mouse PMS1 and MLH1 genes.

FIG. 2 is an alignment of protein sequences for mutL homologs (SEQ. ID NOS: 1-3) showing two highly-conserved regions (underlined) which we used to create degenerate PCR oligonucleotides for isolating additional mutL homologs.

FIG. 3 shows the entire cDNA nucleotide sequence (SEQ. ID NO: 4) for the human MLH1 gene, and the corresponding predicted amino acid sequence (SEQ. ID NO: 5) for the human MLH1 protein. The underlined DNA sequences are the regions of cDNA that correspond to the degenerate PCR primers that were originally used to amplify a portion of the MLH1 gene (nucleotides 118-135 and 343-359).

FIG. 4A shows the nucleotide sequences of the 19 exons which collectively correspond to the entire hMLH1 cDNA structure. The exons are flanked by intron boundary structures. Primer sites are underlined. The exons with their flanking intron structures correspond to SEQ. ID NOS: 6-24. The exons, shown in non-underlined small case letters, correspond to SEQ. ID NOS: 25-43.

FIG. 4B shows nucleotide sequences of primer pairs which have been used in PCR to amplify the individual exons. The “second stage” amplification primers (SEQ. ID NOS: 83-122) are “nested” primers which are used to amplify target exons from the amplification product obtained with corresponding “first stage” amplification primers (SEQ. ID NOS: 44-82). The structures in FIG. 4B correspond to the structures in Tables 2 and 3.

FIG. 5 is an alignment of the predicted amino acid sequences for human and yeast (SEQ. ID NOS: 5 and 123, respectively) MLH1 proteins. Amino acid identities are indicated by boxes and gaps are indicated by dashes.

FIG. 6 is a phylogenetic tree of MutL-related proteins.

FIG. 7 is a two-panel photograph. The first panel (A) is a metaphase spread showing hybridization of the hMLH1 gene of chromosome 3. The second panel (B) is a composite of chromosome 3 from multiple metaphase spreads aligned with a human chromosome 3 ideogram. The region of hybridization is indicated in the ideogram by a vertical bar.

FIG. 8 is a comparison of sequence chromatograms from affected and unaffected individuals showing identification of a C to T transition mutation that produces a non-conservative amino acid substitution at position 44 of the hMLH1 protein.

FIG. 9 is an amino acid sequence alignment (SEQ. ID NOS: 124-131) of the highly-conserved region of the MLH family of proteins surrounding the site of the predicted amino acid substitution. Bold type indicates the position of the predicted serine to phenylalanine amino acid substitution in affected individuals. Also highlighted are the serine or alanine residues conserved at this position in MutL-like proteins. Bullets indicate positions of highest amino acid conservation. For the MLH1 protein, the dots indicate that the sequence has not been obtained. Sequences were aligned as described below in reference to the phylogenetic tree of FIG. 6.

FIG. 10 shows the entire nucleotide sequence for hPMS1 (SEQ. ID NO: 132).

FIG. 11 is an alignment of the predicted amino acid sequences for human and yeast PMS1 proteins (SEQ. ID NOS: 133 and 134, respectively). Amino acid identities are indicated by boxes and gaps are indicated by dashes.

FIG. 12 is a partial nucleotide sequence (SEQ ID NO: 145) from human MLH1.

FIG. 13 shows partial nucleotide sequences (SEQ ID NOS: 146 and 147) from human PMS1 cDNA.

FIG. 14 is a partial nucleotide sequence (SEQ ID NO: 148) from human MLH1.

FIG. 15 is a partial nucleotide sequence (SEQ ID NO: 149) from human PMS1.

DEFINITIONS

gene—“Gene” means a nucleotide sequence that contains a complete coding sequence. Generally, “genes” also include nucleotide sequences found upstream (e.g. promoter sequences, enhancers, etc.) or downstream (e.g. transcription termination signals, polyadenylation sites, etc.) of the coding sequence that affect the expression of the encoded polypeptide.

gene product—A “gene product” is either a DNA or RNA (mRNA) copy of a portion of a gene, or a corresponding amino acid sequence translated from mRNA.

wild-type—The term “wild-type”, when applied to nucleic acids and proteins of the present invention, means a version of a nucleic acid or protein that functions in a manner indistinguishable from a naturally-occurring, normal version of that nucleic acid or protein (i.e. a nucleic acid or protein with wild-type activity). For example, a “wild-type” allele of a mismatch repair gene is capable of functionally replacing a normal, endogenous copy of the same gene within a host cell without detectably altering mismatch repair in that cell. Different wild-type versions of the same nucleic acid or protein may or may not differ structurally from each other.

non-wild-type—The term “non-wild-type” when applied to nucleic acids and proteins of the present invention, means a version of a nucleic acid or protein that functions in a manner distinguishable from a naturally-occurring, normal version of that nucleic acid or protein. Non-wild-type alleles of a nucleic acid of the invention may differ structurally from wild-type alleles of the same nucleic acid in any of a variety of ways including, but not limited to, differences in the amino acid sequence of an encoded polypeptide and/or differences in expression levels of an encoded nucleotide transcript of polypeptide product.

For example, the nucleotide sequence of a non-wild-type allele of a nucleic acid of the invention may differ from that of a wild-type allele by, for example, addition, deletion, substitution, and/or rearrangement of nucleotides. Similarly, the amino acid sequence of a non-wild-type mismatch repair protein may differ from that of a wild-type mismatch repair protein by, for example, addition, substitution, and/or rearrangement of amino acids.

Particular non-wild-type nucleic acids or proteins that, when introduced into a normal host cell, interfere with the endogenous mismatch repair pathway, are termed “dominant negative” nucleic acids or proteins.

homologous—The term “homologous” refers to nucleic acids or polypeptides that are highly related at the level of nucleotide or amino acid sequence. Nucleic acids or polypeptides that are homologous to each other are termed “homologues”.

The term “homologous” necessarily refers to a comparison between two sequences. In accordance with the invention, two nucleotide sequences are considered to be homologous if the polypeptides they encode are at least about 50-60% identical, preferably about 70% identical, for at least one stretch of at least 20 amino acids. Preferably, homologous nucleotide sequences are also characterized by the ability to encode a stretch of at least 4-5 uniquely specified amino acids. Both the identity and the approximate spacing of these amino acids relative to one another must be considered for nucleotide sequences to be considered to be homologous. For nucleotide sequences less than 60 nucleotides in length, homology is determined by the ability to encode a stretch of at least 4-5 uniquely specified amino acids.

upstream/downstream—The terms “upstream” and “downstream” are art-understood terms referring to the position of an element of nucleotide sequence. “Upstream” signifies an element that is more 5′ than the reference element. “Downstream” refers to an element that is more 3′ than a reference element.

intron/exon—The terms “exon” and “intron” are art-understood terms referring to various portions of genomic gene sequences. “Exons” are those portions of a genomic gene sequence that encode protein. “Introns” are sequences of nucleotides found between exons in genomic gene sequences.

affected—The term “affected”, as used herein, refers to those members of a kindred that either have developed a characteristic cancer (e.g. colon cancer in an HNPCC lineage) and/or are predicted, on the basis of, for example, genetic studies, to carry an inherited mutation that confers susceptibility to cancer.

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DESCRIPTION OF THE INVENTION

We have discovered mammalian genes which are involved in DNA mismatch repair. One of the genes, hPMS1, encodes a protein which is homologous to the yeast DNA mismatch repair protein PMS1. We have mapped the locations of hPMS1 to human chromosome 7 and the mouse PMS1 gene to mouse chromosome 5, band G. Another gene, hMLH1 (MutL Homolog) encodes a protein which is homologous to the yeast DNA mismatch repair protein MLH1. We have mapped the locations of hMLH1 to human chromosome 3p21.3-23 and to mouse chromosome 9, band E.

Studies^(1,2) have demonstrated involvement of a human DNA mismatch repair gene homolog, hMSH2, on chromosome 2p in HNPCC. Based upon linkage data, a second HNPCC locus has been assigned to chromosome 3p21-23.³ Examination of tumor DNA from the chromosome 3-linked kindreds revealed dinucleotide repeat instability similar to that observed for other HNPCC families⁶ and several types of sporadic tumors.⁷⁻¹⁰ Because dinucleotide repeat instability is characteristic of a defect in DNA mismatch repair, 5, 11, 12 we reasoned that HNPCC linked to chromosome 3p21-23 could result from a mutation in a second DNA mismatch repair gene.

Repair of mismatched DNA in Escherichia coli requires a number of genes including mutS, mutL and mutH, defects in any one of which result in elevated spontaneous mutation rates.¹³ Genetic analysis in the yeast Saccharomyces cerevisiae has identified three DNA mismatch repair genes: a mutS homolog, MSH2,¹⁴ and two mutL homologs, PMS1¹⁶ and MLH1.⁴ Each of these three genes play an indispensable role in DNA replication fidelity, including the stabilization of dinucleotide repeats.⁵

We believe that hMLH1 is the HNPCC gene previously linked to chromosome 3p based upon the similarity of the hMLH1 gene product to the yeast DNA mismatch repair protein, MLH1,⁴ the coincident location of the hMLH1 gene and the HNPCC locus on chromosome 3, and hMLH1 missense mutations which we found in affected individuals from chromosome 3-linked HNPCC families.

Our knowledge of the human and mouse MLH1 and PMS1 gene structures has many important uses. The gene sequence information can be used to screen individuals for cancer risk. Knowledge of the gene structures makes it possible to easily design PCR primers which can be used to selectively amplify portions of hMLH1 and hPMS1 genes for subsequent comparison to the normal sequence and cancer risk analysis. This type of testing also makes it possible to search for and characterize hMLH1 and hPMS1 cancer-linked mutations for the purpose of eventually focusing the cancer screening effort on specific gene loci. Specific characterization of cancer-linked mutations in hMLH1 and hPMS1 makes possible the production of other valuable diagnostic tools such as allele specific probes which may be used in screening tests to determine the presence or absence of specific gene mutations.

Additionally, the gene sequence information for hMLH1 and/or hPMS1 can be used, for example, in a two hybrid system, to search for other genes of related function which are candidates for cancer involvement.

The hMLH1 and hPMS1 gene structures are useful for making proteins which are used to develop antibodies directed to specific portions or the complete hMLH1 and hPMS1 proteins. Such antibodies can then be used to isolate the corresponding protein and possibly related proteins for research and diagnostic purposes.

The mouse MLH1 and PMS1 gene sequences are useful for producing mice that have mutations in the respective gene. The mutant mice are useful for studying the gene's function, particularly its relationship to cancer.

Methods for Isolating and Characterizing Mammalian MLH1 and PMS1 Genes

We have isolated and characterized four mammalian genes, i.e., human MLH1 (hMLH1), human PMS1 (hPMS1), mouse MLH1 (mPMS1) and mouse PMS1 (mPMS1). Due to the structural similarity between these genes, the methods we have employed to isolate and characterize them are generally the same. FIG. 1 shows in broad terms, the experimental approach which we used to isolate and characterize the four genes. The following discussion refers to the step-by-step procedure shown in FIG. 1.

Step 1 Design of Degenerate Oligonucleotide Pools for PCR

Earlier reports indicated that portions of three MutL-like proteins, two from bacteria, MutL and HexB, and one from yeast, PMS1 are highly conserved.^(16,18,19) After inspection of the amino acid sequences of HexB, MutL and PMS1 proteins, as shown in FIG. 2, we designed pools of degenerate oligonucleotide pairs corresponding to two highly-conserved regions, KELVEN and GFRGEA, of the MutL-like proteins. The sequences (SEQ. ID NOS: 135 and 136, respectively) of the degenerate oligonucleotides which we used to isolate the four genes are:

5′-CTTGATTCTAGAGC(T/C)TCNCCNC(T/G)(A/G)AANCC-3′ and

5′-AGGTCGGAGCTCAA(A/G)GA(A/G)(T/C)TNGTNGANAA-3′.

The underlined sequences within the primers are XbaI and SacI restriction endonuclease sites respectively. They were introduced in order to facilitate the cloning of the PCR-amplified fragments. In the design of the oligonucleotides, we took into account the fact that a given amino acid can be coded for by more than one DNA triplet (codon). The degeneracy within these sequences are indicated by multiple nucleotides within parentheses or N, for the presence of any base at that position.

Step 2 Reverse Transcription and PCR on poly A+ Selected mRNA Isolated From Human Cells

We isolated messenger (poly A+ enriched) RNA from cultured human cells, synthesized double-stranded cDNA from the mRNA, and performed PCR with the degenerate oligonucleotides.⁴ After trying a number of different PCR conditions, for example, adjusting the annealing temperature, we successfully amplified a DNA of the size predicted (˜210 bp) for a MutL-like protein.

Step 3 Cloning and Sequencing of PCR-generated Fragments; Identification of Two Gene Fragments Representing Human PMS1 and MLH1.

We isolated the PCR amplified material (˜210 bp) from an agarose gel and cloned this material into a plasmid (pUC19). We determined the DNA sequence of several different clones. The amino acid sequence inferred from the DNA sequence of two clones showed strong similarity to other known MutL-like proteins.^(4,16,18,19) The predicted amino acid sequence for one of the clones was most similar to the yeast PMS1 protein. Therefore we named it hPMS1, for human PMS1. The second clone was found to encode a polypeptide that most closely resembles yeast MLH1 protein and was named, hMLH1, for human MLH1.

Step 4 Isolation of Complete Human and Mouse PMS1 and MLH1 cDNA Clones Using the PCR Fragments as Probes

We used the 210 bp PCR-generated fragments of the hMLH1 and hPMS1 cDNAs, as probes to screen both human and mouse cDNA libraries (from Stratagene, or as described in reference 30). A number of cDNAs were isolated that corresponded to these two genes. Many of the cDNAs were truncated at the 5′ end. Where necessary, PCR techniques³¹ were used to obtain the 5′ end of the gene in addition to further screening of cDNA libraries. Complete composite cDNA sequences were used to predict the amino acid sequence of the human and mouse, MLH1 and PMS1 proteins.

Step 5 Isolation of Human and Mouse, PMS1 and MLH1 Genomic Clones

Information on genomic and cDNA structure of the human MLH1 and PMS1 genes are necessary in order to thoroughly screen for mutations in cancer prone families. We have used human cDNA sequences as probes to isolate the genomic sequences of human PMS1 and MLH1. We have isolated four cosmids and two P1 clones for hPMS1, that together are likely to contain most, if not all, of the cDNA (exon) sequence. For hMLH1 we have isolated four overlapping λ-phage clones containing 5′-MLH1 genomic sequences and four P1 clones (two full length clones and two which include the 5′ coding end plus portions of the promoter region) P1 clone. PCR analysis using pairs of oligonucleotides specific to the 5′ and 3′ ends of the hMLH1 cDNA, clearly indicates that the P1 clone contains the complete hMLH1 cDNA information. Similarly, genomic clones for mouse PMS1 and MLH1 genes have been isolated and partially characterized (described in Step 8).

Step 6 Chromosome Positional Mapping of the Human and Mouse, PMS1 and MLH1 Genes by Fluorescence in situ Hybridization

We used genomic clones isolated from human and mouse PMS1 and MLH1 for chromosomal localization by fluorescence in situ hybridization (FISH).^(20,21) We mapped the human MLH1 gene to chromosome 3p21.3-23, shown in FIG. 7 as discussed in more detail below. We mapped the mouse MLH1 gene to chromosome 9 band E, a region of synteny between mouse and human.²² In addition to FISH techniques, we used PCR with a pair of hMLH1-specific oligonucleotides to analyze DNA from a rodent/human somatic cell hybrid mapping panel (Coriell Institute for Medial Research, Camden, N.J.). Our PCR results with the panel clearly indicate that hMLH1 maps to chromosome 3. The position of hMLH1 3p21.3-23 is coincident to a region known to harbor a second locus for HNPCC based upon linkage data.

We mapped the hPMS1 gene, as shown in FIG. 12, to the long (q) arm of chromosome 7 (either 7q11 or 7q22) and the mouse PMS1 to chromosome 5 band G, two regions of synteny between the human and the mouse.²² We performed PCR using oligonucleotides specific to hPMS1 on DNA from a rodent/human cell panel. In agreement with the FISH data, the location of hPMS1 was confirmed to be on chromosome 7. These observations assure us that our human map position for hPMS1 to chromosome 7 is correct. The physical localization of hPMS1 is useful for the purpose of identifying families which may potentially have a cancer linked mutation in hPMS1.

Step 7 Using Genomic and cDNA Sequences to Identify Mutations in hPMS1 and hMLH1 Genes From HNPCC Families

We have analyzed samples collected from individuals in HNPCC families for the purpose of identifying mutations in hPMS1 or hMLH1 genes. Our approach is to design PCR primers based on our knowledge of the gene structures, to obtain exon/intron segments which we can compare to the known normal sequences. We refer to this approach as an “exon-screening”.

Using cDNA sequence information we have designed and are continuing to design hPMS1 and hMLH1 specific oligonucleotides to delineate exon/intron boundaries within genomic sequences. The hPMS1 and hMLH1 specific oligonucleotides were used to probe genomic clones for the presence of exons containing that sequence. Oligonucleotides that hybridized were used as primers for DNA sequencing from the genomic clones. Exon-intron junctions were identified by comparing genomic with cDNA sequences.

Amplification of specific exons from genomic DNA by PCR and sequencing of the products is one method to screen HNPCC families for mutations.^(1,2) We have identified genomic clones containing hMLH1 cDNA information and have determined the structures of all intron/exon boundary regions which flanks the 19 exons of hMCH1.

We have used the exon-screening approach to examine the MLH1 gene of individuals from HNPCC families showing linkage to chromosome 3.³ As will be discussed in more detail below, we identified a mutation in the MLH1 gene of one such family, consisting of a C to T substitution. We predict that the C to T mutation causes a serine to phenylalanine substitution in a highly-conserved region of the protein. We are continuing to identify HNPCC families from whom we can obtain samples in order to find additional mutations in hMLH1 and hPMS1 genes.

We are also using a second approach to identify mutations in hPMS1 and hMLH1. The approach is to design hPMS1 or hMLH1 specific oligonucleotide primers to produce first-strand cDNA by reverse transcription off RNA. PCR using gene-specific primers will allow us to amplify specific regions from these genes. DNA sequencing of the amplified fragments will allow us to detect mutations.

Step 8 Design Targeting Vectors to Disrupt Mouse PMS1 and MLH1 Genes in ES Cells; Study Mice Deficient in Mismatch Repair.

We constructed a gene targeting vector based on our knowledge of the genomic mouse PMS1 DNA structure. We used the vector to disrupt the PMS1 gene in mouse embryonic stem cells.³⁶ The cells were injected into mouse blastocysts which developed into mice that are chimeric (mixtures) for cells carrying the PMS1 mutation. The chimeric animals will be used to breed mice that are heterozygous and homozygous for the PMS1 mutation. These mice will be useful for studying the role of the PMS1 gene in the whole organism.

Human MLH1

The following discussion is a more detailed explanation of our experimental work relating to hMLH1. As mentioned above, to clone mammalian MLH genes, we used PCR techniques like those used to identify the yeast MSH1, MSH2 and MLH1 genes and the human MSH2 gene.^(1 2, 4, 14) As template in the PCR, we used double-stranded cDNA synthesized from poly (A+) enriched RNA prepared from cultured primary human fibroblasts. The degenerate oligonucleotides were targeted at the N-terminal amino acid sequences KELVEN and GFRGEA (see FIG. 3), two of the most conserved regions of the MutL family of proteins previously described for bacteria and yeast.^(16,18,19) Two PCR products of the predicted size were identified, cloned and shown to encode a predicted amino acid sequence with homology to MutL-like proteins. These two fragments generated by PCR were used to isolate human cDNA and genomic DNA clones.

The oligonucleotide primers which we used to amplify human MutL-related sequences were 5′-CTTGATTCTAGAGC(T/C)TCNCCNC(T/G)(A/G)AANCC-3′ (SEQ. ID NO: 135) and 5′-AGGTCGGAGCTCAA(A/G)GA(A/G)(T/C)TNGTNGANAA-3′ (SEQ. ID NO: 136). PCR was carried out in 50 μL reactions containing cDNA template, 1.0 μM each primer, 5 IU of Taq polymerase (C) 50 mM KCl, 10 mM Tris buffer pH 7.5 and 1.5 mM MgCl. PCR was carried out for 35 cycles of 1 minute at 94° C., 1 minute at 43° C. and 1.5 minutes at 62° C. Fragments of the expected size, approximately 212 bp, were cloned into pUC19 and sequenced. The cloned MLH1 PCR products were labeled with a random primer labeling kit (RadPrime, Gibco BRL) and used to probe human cDNA and genomic cosmid libraries by standard procedures. DNA sequencing of double-stranded plasmid DNAs was performed as previously described.¹

The hMLH1 cDNA nucleotide sequence as shown in FIG. 3 encodes an open reading frame of 2268 bp. Also shown in FIG. 3 is the predicted protein sequence encoded for by the HMLH1 cDNA. The underlined DNA sequences are the regions of cDNA that correspond to the degenerate PCR primers that were originally used to amplify a portion of the MLH1 gene (nucleotides 118-135 and 343-359).

FIG. 4A shows 19 nucleotide sequences corresponding to portions of hMLH1. Each sequence includes one of the 19 exons, in its entirety, surrounded by flanking intron sequences. Target PCR primer cites are underlined. More details relating to the derivation and uses of the sequences shown in FIG. 4A, are set forth below.

As shown in FIG. 5, the hMLH1 protein is comprised of 756 amino acids and shares 41% identity with the protein product of the yeast DNA mismatch repair gene, MLH1.⁴ The regions of the hMLH1 protein most similar to yeast MLH1 correspond to amino acids 11 through 317, showing 55% identity, and the last 13 amino acids which are identical between the two proteins. FIG. 5 shows an alignment of the predicted human MLH1 and S. cerevisiae MLH1 protein sequences. Amino acid identities are indicated by boxes, and gaps are indicated by dashes. The pair wise protein sequence alignment was performed with DNAStar MegAlign using the clustal method.²⁷ Pair wise alignment parameters were a ktuple of 1, gap penalty of 3, window of 5 and diagonals of 5.

FIG. 6 shows a phylogenetic tree of MutL-related proteins. The phylogenetic tree was constructed using the predicted amino acid sequences of 7 MutL-related proteins: human MLH1; mouse MLH1; S. cerevisiae MLH1; S. cerevisiae PMS1; E. coli; MutL; S. typhimurium MutL and S. pneumoniae HexB. Required sequences were obtained from GenBank release 7.3. The phylogenetic tree was generated with the PILEUP program of the Genetics Computer Group software using a gap penalty of 3 and a length penalty of 0.1. The recorded DNA sequences of HMLH1 and hPMS1 have been submitted to GenBank.

hMLH1 Intron Location and Intron/Exon Boundary Structures

In our previous U.S. patent application Ser. No. 08/209,521, we described the nucleotide sequence of a complimentary DNA (cDNA) clone of a human gene, hMLH1. The cDNA sequence of hMLH1 (SEQ. ID NO: 4) is presented in this application in FIG. 3. We note that there may be some variability between individuals hMLH1 cDNA structures, resulting from polymorphisms within the human population, and the degeneracy of the genetic code.

In the present application, we report the results of our genomic sequencing studies. Specifically, we have cloned the human genomic region that includes the hMLH1 gene, with specific focus on individual exons and surrounding intron/exon boundary structures. Toward the ultimate goal of designing a comprehensive and efficient approach to identify and characterize mutations which confer susceptibility to cancer, we believe it is important to know the wild-type sequences of intron structures which flank exons in the hMLH1 gene. One advantage of knowing the sequence of introns near the exon boundaries, is that it makes it possible to design primer pairs for selectively amplifying entire individual exons. More importantly, it is also possible that a mutation in an intron region, which, for example, may cause a mRNA splicing error, could result in a defective gene product, i.e., susceptibility to cancer, without showing any abnormality in an exon region of the gene. We believe a comprehensive screening approach requires searching for mutations, not only in the exon or cDNA, but also in the intron structures which flank the exon boundaries.

We have cloned the human genomic region that includes hMLH1 using approaches which are known in the art, and other known approaches could have been used. We used PCR to screen a P1 human genomic library for the hMLH1 gene. We obtained four clones, two that contained the whole gene and two which lacked the C-terminus. We characterized one of the full length clones by cycle sequencing, which resulted in our definition of all intron/exon junction sequences for both sides of the 19 hMLH1 exons. We then designed multiple sets of PCR primers to amplify each individual exon (first stage primers) and verified the sequence of each exon and flanking intron sequence by amplifying several different genomic DNA samples and sequencing the resulting fragments using an ABI 373 sequencer. In addition, we have determined the sizes of each hMLH1 exon using PCR methods. Finally, we devised a set of nested PCR primers (second stage primers) for reamplification of individual exons. We have used the second stage primers in a multi-plex method for analyzing HNPCC families and tumors for hMLH1 mutations. Generally, in the nested PCR primer approach, we perform a first multi-plex amplification with four to eight sets of “first stage” primers, each directed to a different exon. We then reamplify individual exons from the product of the first amplification step, using a single set of second stage primers. Examples and further details relating to our use of the first and second stage primers are set forth below.

Through our genomic sequencing studies, we have identified all nineteen exons within the hMLH1 gene, and have mapped the intron/exon boundaries. One aspect of the invention, therefore, is the individual exons of the hMLH1 gene. Table 1 presents the nucleotide coordinates (i.e., the point of insertion of each intron within the coding region of the gene) of the hMLH1 exons (SEQ. ID NOS: 25-43). The presented coordinates are based on the hMLH1 cDNA sequence, assigning position “1” to the “A” of the start “ATG” (which A is nucleotide 1 in SEQ. ID NO: 4).

TABLE 1 Intron Number cDNA Sequence Coordinates intron 1 116 & 117 intron 2 207 & 208 intron 3 306 & 307 intron 4 380 & 381 intron 5 453 & 454 intron 6 545 & 546 intron 7 592 & 593 intron 8 677 & 678 intron 9 790 & 791 intron 10 884 & 885 intron 11 1038 & 1039 intron 12 1409 & 1410 intron 13 1558 & 1559 intron 14 1667 & 1668 intron 15 1731 & 1732 intron 16 1896 & 1897 intron 17 1989 & 1990 intron 18 2103 & 2104

We have also determined the nucleotide sequence of intron regions which flank exons of the hMLH1 gene. SEQ. ID NOS: 6-24 are individual exon sequences bounded by their respective upstream and downstream intron sequences. The same nucleotide structures are shown in FIG. 4A, where the exons are numbered from N-terminus to C-terminus with respect to the chromosomal locus. The 5-digit numbers indicate the primers used to amplify the exon. All sequences are numbered assuming the A of the ATG codon is nucleotide 1. The numbers in ( ) are the nucleotide coordinates of the coding sequence found in the indicated exon. Uppercase is intron. Lowercase is exon or non-translated sequences found in the mRNA/cDNA clone. Lowercase and underlined sequences correspond to primers. The stop codon at 2269-2271 is in italics and underlined.

Table 2 presents the sequences of primer pairs (“first stage” primers) which we have used to amplify individual exons together with flanking intron structures.

TABLE 2 PRIMER EXON PRIMER PRIMER SEQ.ID PRIMER NUCLEOTIDE NO. LOCATION NO. NO SEQUENCE  1 upstream 18442 44 5′aggcactgaggtgattggc  1 downstream 19109 45 5′tcgtagcccttaagtgagc  2 upstream 19689 46 5′aatatgtacattagagtagttg  2 downstream 19688 47 5′cagagaaaggtcctgactc  3 upstream 19687 48 5′agagatttggaaaatgagtaac  3 downstream 19786 49 5′acaatgtcatcacaggagg  4 upstream 18492 50 5′aacctttccctttggtgagg  4 downstream 18421 51 5′gattactctgagacctaggc  5 upstream 18313 52 5′gattttctcttttccccttggg  5 downstream 18179 53 5′caaacaaagcttcaacaatttac  6 upstream 18318 54 5′gggttttattttcaagtacttctatg  6 downstream 18317 55 5′gctcagcaactgttcaatgtatgagc  7 upstream 19009 56 5′ctagtgtgtgtttttggc  7 downstream 19135 57 5′cataaccttatctccacc  8 upstream 18197 58 5′ctcagccatgagacaataaatcc  8 downstream 18924 59 5′ggttcccaaataatgtgatgg  9 upstream 18765 60 5′caaaagcttcagaatctc  9 downstream 18198 61 5′ctgtgggtgtttcctgtgagtgg 10 upstream 18305 62 5′catgactttgtgtgaatgtacacc 10 downstream 18306 63 5′gaggagagcctgatagaacatctg 11 upstream 18182 64 5′gggctttttctccccctccc 11 downstream 19041 65 5′aaaatctgggctctcacg 12 upstream 18579 66 5′aattatacctcatactagc 12 downstream 18178 67 5′gttttattacagaataaaggagg 12 downstream 19070 68 5′aagccaaagttagaaggca 13 upstream 18420 69 5′tgcaacccacaaaatttggc 13 downstream 18443 70 5′ctttctccatttccaaaacc 14 upstream 19028 71 5′tggtgtctctagttctgg 14 downstream 18897 72 5′cattgttgtagtagctctgc 15 upstream 19025 73 5′cccatttgtcccaactgg 15 downstream 18575 74 5′cggtcagttgaaatgtcag 16 upstream 18184 75 5′catttggatgctccgttaaagc 16 downstream 18314 76 5′cacccggctggaaattttatttg 17 upstream 18429 77 5′ggaaaggcactggagaaatggg 17 downstream 18315 78 5′ccctccagcacacatgcatgtaccg 18 upstream 18444 79 5′taagtagtctgtgatctccg 18 downstream 18581 80 5′atgtatgaggtcctgtcc 19 upstream 18638 81 5′gacaccagtgtatgttgg 19 downstream 18637 82 5′gagaaagaagaacacatccc

Additionally, we have designed a set of “second stage” amplification primers, the structures of which are shown below in Table 3. We use the second stage primers in conjunction with the first stage primers in a nested amplification protocol, as described below.

TABLE 3 PRIMER EXON PRIMER PRIMER SEQ. ID NO. LOCATION NO. NO PRIMER NUCLEOTIDE SEQUENCE  1 upstream 19295  83 5′tgtaaaacgacggccagtcactgaggtgattggctgaa  1 downstream 19446  84 *5′tagcccttaagtgagcccg  2 upstream 18685  85 5′tgtaaaacgacggccagttacattagagtagttgcaga  2 downstream 19067  86 *5′aggtcctgactcttccatg  3 upstream 18687  87 5′tgtaaaacgacggccagtttggaaaatgagtaacatgatt  3 downstream 19068  88 *5′tgtcatcacaggaggatat  4 upstream 19294  89 5′tgtaaaacgacggccagtctttccctttggtgaggtga  4 downstream 19077  90 *5′tactctgagacctaggccca  5 upstream 19301  91 5′tgtaaaacgacggccagttctcttttccccttgggattag  5 downstream 19046  92 *5′acaaagcttcaacaatttactct  6 upstream 19711  93 5′tgtaaaacgacggccagtgttttattttcaagtacttctatgaatt  6 downstream 19079  94 *5′cagcaactgttcaatgtatgagcact  7 upstream 19293  95 5′tgtaaaacgacggccagtgtgtgtgtttttggcaac  7 downstream 19435  96 *5′aaccttatctccaccagc  8 upstream 19329  97 5′tgtaaaacgacggccagtagccatgagacaataaatccttg  8 downstream 19450  98 *5′tcccaaataatgtgatggaatg  9 upstream 19608  99 5′tgtaaaacgacggccagtaagcttcagaatctctttt  9 downstream 19449 100 *5′tgggtgtttcctgtgagtggatt 10 upstream 19297 101 5′tgtaaaacgacggccagtactttgtgtgaatgtacacctgtg 10 downstream 19081 102 *5′gagagcctgatagaacatctgttg 11 upstream 19486 103 5′tgtaaaacgacggccagtctttttctccccctcccacta 11 downstream 19455 104 *5′tctgggctctcacgtct 12 upstream 20546 105 *5′cttattctgagtctctcc 12 downstream 20002 106 5′tgtaaaacgacggccagtgtttgctcagaggctgc 12 upstream 19829 107 *5′gatggttcgtacagattcccg 12 downstream 19385 108 5′tgtaaaacgacggccagtttattacagaataaaggaggtag 13 upstream 19300 109 5′tgtaaaacgacggccagtaacccacaaaatttggctaag 13 downstream 19078 110 *5′tctccatttccaaaaccttg 14 upstream 19456 111 *5′tgtctctagttctggtgc 14 downstream 19472 112 5′tgtaaaacgacggccagttgttgtagtagctctgcttg 15 upstream 19697 113 *5′atttgtcccaactggttgta 15 downstream 19466 114 5′tgtaaaacgacggccagttcagttgaaatgtcagaaagtg 16 upstream 19269 115 5′tgtaaaacgacggccagt 16 downstream 19047 116 *5′ccggctggaaattttatttggag 17 upstream 19298 117 5′tgtaaaacgacggccagtaggcactggagaaatgggatttg 17 downstream 19080 118 *5′tccagcacacatgcatgtaccgaaat 18 upstream 19436 119 *5′gtagtctgtgatctccgttt 18 downstream 19471 120 5′tgtaaaacgacggccagttatgaggtcctgtcctag 19 upstream 19447 121 *5′accagtgtatgttgggatg 19 downstream 19330 122 5′tgtaaaacgacggccagtgaaagaagaacacatcccaca

In Table 3 an asteric (*) indicates that the 5′ nucleotide is biotinylated. Exons 1-7, 10, 13 and 16-19 can be specifically amplified in PCR reactions containing either 1.5 mM or 3 mM MgCl₂. Exons 11 and 14 can only be specifically amplified in PCR reactions containing 1.5 mM MgCl₂ and exons 8, 9, 12 and 15 can only be specifically amplified in PCR reactions containing 3 mM MgCL₂. With respect to exon 12, the second stage amplification primers have been designed so that exon 12 is reamplified in two halves. The 20546 and 20002 primer set amplifies the N-terminal half The primer set 19829 and 19835 amplifies the C-terminal half. An alternate primer for 18178 is 19070.

The hMLH1 sequence information provided by our studies and disclosed in this application and preceding related applications, may be used to design a large number of different oligonucleotide primers for use in identifying hMLH1 mutations that correlate with cancer susceptibility and/or with tumor development in an individual, including primers that will amplify more than one exon (and/or flanking intron sequences) in a single product band.

One of ordinary skill in the art would be familiar with considerations important to the design of PCR primers for use to amplify the desired fragment or gene.³⁷ These considerations may be similar, though not necessarily identical to those involved in design of sequencing primers, as discussed above. Generally it is important that primers hybridize relatively specifically (i.e. have a T_(m) of greater than about 55° C., and preferably around 60° C.). For most cases, primers between about 17 and 25 nucleotides in length work well. Longer primers can be useful for amplifying longer fragments. In all cases, it is desirable to avoid using primers that are complementary to more than one sequence in the human genome, so that each pair of PCR primers amplifies only a single, correct fragment. Nevertheless, it is only absolutely necessary that the correct band be distinguishable from other product bands in the PCR reaction.

The exact PCR conditions (e.g. salt concentration, number of cycles, type of DNA polymerase, etc.) can be varied as known in the art to improve, for example, yield or specificity of the reaction. In particular, we have found it valuable to use nested primers in PCR reactions in order to reduce the amount of required DNA substrate and to improve amplification specificity.

Two examples follow. The first example illustrates use of a first stage primer pair (SEQ. ID NOS: 69 and 70) to amplify intron/exon segment (SEQ. ID NO: 18). The second example illustrates use of second stage primers to amplify a target intron/exon segment from the product of a first PCR amplification step employing first stage primers.

EXAMPLE 1 Amplification of hMLH1 Genomic Clones from a P1 Phage Library

25 ng genomic DNA (or 1 ng of a P1 phage can be used) was used in PCR reactions including:

0.05mM dNTPs

50 mM KCl

3 mM Mg

10 mM Tris-HCl pH 8.5

0.01% gelatin

5 μM primers

Reactions were performed on a Perkin-Elmer Cetus model 9600 thermal cycler. Reactions were incubated at 95° C. for 5 minutes, followed by 35 cycles (30 cycles from a P1 phage) of:

94° C. for 30 seconds

55° C. for 30 seconds

72° C. for 1 minute.

A final 7 minute extension reaction was then performed at 72°-degrees C. Desirable P1 clones were those from which an approximately bp product band was produced.

EXAMPLE 2 Amplification of hMLH1 Sequences From Genomic DNA Using Nested PCR Primers

We performed two-step PCR amplification of hMLH1 sequences from genomic DNA as follows. Typically, the first amplification was performed in a 25 microliter reaction including:

25 ng of chromosomal DNA

Perkin-Elmer PCR buffer II (any suitable buffer could be used)

3 mM MgCl₂

50 μM each dNTP

Taq DNA polymerase

5 μM primers (SEQ. ID NOS: 69, 70)

and incubated at 95° C. for 5 minutes, followed by 20 cycles of:

94° C. for 30 seconds

55° C. for 30 seconds

The product band was typically small enough (less than an approximately 500 bp) that separate extension steps were not performed as part of each cycle. Rather, a single extension step was performed, at 72° C. for 7 minutes, after the 20 cycles were completed. Reaction products were stored at 4° C.

The second amplification reaction, usually 25 or 50 microliters in volume, included:

1 or 2 microliters (depending on the volume of the reaction) of the first amplification reaction product

Perkin-Elmer PCR buffer II (any suitable buffer could be used)

3 mM or MgCl₂

50 μM each dNTP

Taq DNA polymerase

5 μM nested primers (SEQ. ID NOS: 109, 110),

and was incubated at 95° C. for 5 minutes, followed by 20-25 cycles of:

94° C. for 30 seconds

55° C. for 30 seconds

a single extension step was performed, at 72° C. for 7 minutes, after the cycles were completed Reaction products were stored at 4° C.

Any set of primers capable of amplifying a target hMLH1 sequence can be used in the first amplification reaction. We have used each of the primer sets presented in Table 2 to amplify an individual hMLH1 exon in the first amplification reaction. We have also used combinations of those primer sets, thereby amplifying multiple individual hMLH1 exons in the first amplification reaction.

The nested primers used in the first amplification step were designed relative to the primers used in the first amplification reaction. That is, where a single set of primers is used in the first amplification reaction, the primers used in the second amplification reaction should be identical to the primers used in the first reaction except that the primers used in the second reaction should not include the 5′-most nucleotides of the first amplification reaction primers, and should extend sufficiently more at the 3′ end that the T_(m) of the second amplification primers is approximately the same as the T_(m) of the first amplification reaction primers. Our second reaction primers typically lacked the 3 5′-most nucleotides of the first amplification reaction primers, and extended approximately 3-6 nucleotides farther on the 3′ end. SEQ. ID NOS: 109, 110 are examples of nested primer pairs that could be used in a second amplification reaction when SEQ. ID NOS: 69 and 70 were used in the first amplification reaction.

We have also found that it can be valuable to include a standard sequence at the 5′ end of one of the second amplification reaction primers to prime sequencing reactions. Additionally, we have found it useful to biotinylate that last nucleotide of one or both of the second amplification reaction primers so that the product band can easily be purified using magnetic beads⁴⁰ and then sequencing reactions can be performed directly on the bead-associated products.⁴¹⁻⁴⁵

For additional discussion of multiplex amplification and sequencing methods, see References by Zu et al. and Espelund et al.^(46,47)

hMLH1 Link to Cancer

As a first step to determine whether hMLH1 was a candidate for the HNPCC locus on human chromosome 3p21-23,³ we mapped hMLH1 by fluorescence in situ hybridization (FISH).^(20,21) We used two separate genomic fragments (data not shown) of the hMLH1 gene in FISH analysis. Examination of several metaphase chromosome spreads localized hMLH1 to chromosome 3p21.3-23.

Panel A of FIG. 7 shows hybridization of hMLH1 probes in a metaphase spread. Biotinylated hMLH1 genomic probes were hybridized to banded human metaphase chromosomes as previously described.^(20,21) Detection was performed with fluorescein isothiocyanate (FITC)-conjugated avidin (green signal); chromosomes, shown in blue, were counterstained with 4′6-diamino-2-phenylindole (DAPI). Images were obtained with a cooled CCD camera, enhanced, pseudocoloured and merged with the following programs: CCD Image Capture; NIH Image 1.4; Adobe Photoshop and Genejoin Maxpix respectively. Panel B of FIG. 7 shows a composite of chromosome 3 from multiple metaphase spreads aligned with the human chromosome 3 ideogram. Region of hybridization (distal portion of 3p21.3-23) is indicated in the ideogram by a vertical bar.

As independent confirmation of the location of hMLH1 on chromosome 3, we used both PCR with a pair of hMLH1-specific oligonucleotides and Southern blotting with a hMLH1-specific probe to analyze DNA from the NIGMS2 rodent/human cell panel (Coriell Inst. for Med. Res., Camden, N.J., USA). Results of both techniques indicated chromosome 3 linkage. We also mapped the mouse MLH1 gene by FISH to chromosome 9 band E. This is a position of synteny to human chromosome 3p.²² Therefore, the hMLH1 gene localizes to 3p21.3-23, within the genomic region implicated in chromosome 3-linked HNPCC families.³

Next, we analyzed blood samples from affected and unaffected individuals from two chromosome-3 candidate HNPCC families³ for mutations. One family, Family 1, showed significant linkage (lod score=3.01 at recombination fraction of 0) between HNPCC and a marker on 3p. For the second family, Family 2, the reported lod score (1.02) was below the commonly accepted level of significance, and thus only suggested linkage to the same marker on 3p. Subsequent linkage analysis of Family 2 with the microsatellite marker D3S1298 on 3p21.3 gave a more significant lod score of 1.88 at a recombination fraction of 0. Initially, we screened for mutations in two PCR-amplified exons of the hMLH1 gene by direct DNA sequencing (FIG. 4). We examined these two exons from three affected individuals of Family 1, and did not detect any differences from the expected sequence. In Family 2, we observed that four individuals affected with colon cancer are heterozygous for a C to T substitution in an exon encoding amino acids 41-69, which corresponds to a highly-conserved region of the protein (FIG. 9). For one affected individual, we screened PCR-amplified cDNA for additional sequence differences. The combined sequence information obtained from the two exons and cDNA of this one affected individual represents 95% (i.e. all but the first 116 bp) of the open reading frame. We observed no nucleotide changes other than the C to T substitution. In addition, four individuals from Family 2, predicted to be carriers based upon linkage data, and as yet unaffected with colon cancer, were found to be heterozygous for the same C to T substitution. Two of these predicted carriers are below and two are above the mean age of onset (50 years) in this particular family. Two unaffected individuals examined from this same family, both predicted by linkage data to be non carriers, showed the expected normal sequence at this position. Linkage analysis that includes the C to T substitution in Family 2 gives a lod score of 2.23 at a recombination fraction 0. Using low stringency cancer diagnostic criteria, we calculated a lod score of 2.53. These data indicate the C to T substitution shows significant linkage to the HNPCC in Family 2.

FIG. 8 shows sequence chromatograms indicating a C to T transition mutation that produces a non-conservative amino acid substitution at position 44 of the hMLH1 protein. Sequence analysis of one unaffected (top panels, plus and minus strands) and one affected individual (lower panels, plus and minus strands) is presented. The position of the heterozygous nucleotide is indicated by an arrow. Analysis of the sequence chromatographs indicates that there is sufficient T signal in the C peak and enough A signal in the G peak for the affected individuals to be heterozygous at this site.

To determine whether this C to T substitution was a polymorphism, we sequenced this same exon amplified from the genomic DNA from 48 unrelated individuals and observed only the normal sequence. We have examined an additional 26 unrelated individuals using allele specific oligonucleotide (ASO) hybridization analysis.³³ The ASO sequences (SEQ. ID NOS: 137 and 138, respectively) which we used are:

5′-ACTTGTGGATFGC-3′ and

5′-ACTTGTGAATT′lGC-3′.

Based upon direct DNA sequencing and ASO analysis, none of these 74 unrelated individuals carry the C to T substitution. Therefore, the C to T substitution observed in Family 2 individuals is not likely to be a polymorphism. As mentioned above, we did not detect this same C to T substitution in affected individuals from a second chromosome 3-linked family, Family 1.³ We are continuing to study individuals of Family 1 for mutations in hMLH1.

Table 4 below summarizes our experimental analysis of blood samples from affected and unaffected individuals from Family 2 and unrelated individuals.

TABLE 4 Number of Individuals with C to T Mutation/ Status Number of Individuals Tested Family 2 Affected 4/4 Predicted Carriers 4/4 Predicted Noncarriers 0/2 Unrelated Individuals  0/74

Based on several criteria, we suggest that the observed C to T substitution in the coding region of hMLH1 represents the mutation that is the basis for HNPCC in Family 2.³ First, DNA sequence and ASO analysis did not detect the C to T substitution in 74 unrelated individuals. Thus, the C to T substitution is not simply a polymorphism. Second, the observed C to T substitution is expected to produce a serine to phenylalanine change at position 44 (See FIG. 9). This amino acid substitution is a non-conservative change in a conserved region of the protein (FIGS. 3 and 9). Secondary structure predictions using Chou-Fasman parameters suggest a helix-turn-beta sheet structure with position 44 located in the turn. The observed Ser to Phe substitution, at position 44 lowers the prediction for this turn considerably, suggesting that the predicted amino acid substitution alters the conformation of the hMLH1 protein. The suggestion that the Ser to Phe substitution is a mutation which confers cancer susceptibility is further supported by our experiments which show that an analogous substitution (alanine to phenylalanine) in a yeast MLH1 gene results in a nonfunctional mismatch repair protein. In bacteria and yeast, a mutation affecting DNA mismatch repair causes comparable increases in the rate of spontaneous mutation including additions and deletions within dinucleotide repeats.^(4,5,11,13,14,15,16) In humans, mutation of hMSH2 is the basis of chromosome-2 HNPCC,^(1,2) tumors which show microsatellite instability and an apparent defect in mismatch repair.¹² Chromosome 3-linked HNPCC is also associated with instability of dinucleotide repeats.³ Combined with these observations, the high degree of conservation between the human MLH1 protein and the yeast DNA mismatch repair protein MLH1 suggests that hMLH1 is likely to function in DNA mismatch repair. During isolation of the hMLH1 gene, we identified the hPMS1 gene. This observation suggests that mammalian DNA mismatch repair, like that in yeast,⁴ may require at least two MutL-like proteins.

It should be noted that it appears that different HNPCC families show different mutations in the MLH1 gene. As explained above, affected individuals in Family 1 showed “tight linkage” between HNPCC and a locus in the region of 3p21-23. However, affected individuals in Family 1 do not have the C to T mutation found in Family 2. It appears that the affected individuals in Family 1 have a different mutation in their MLH1 gene. Further, we have used the structure information and methods described in this application to find and characterize another hMLH1 mutation which apparently confers cancer susceptibility in heterozygous carriers of the mutant gene in a large English HNPCC family. The hMLH1 mutation in the English family is a +1 T frameshift which is predicted to lead to the synthesis of a truncated hMLH1 protein. Unlike, for example, sickle cell anemia, in which essentially all known affected individuals have the same mutation multiple hMLH1 mutations have been discovered and linked to cancer. Therefore, knowledge of the entire cDNA sequence for HMLH1 (and probably hPMS1), as well as genomic sequences particularly those that surround exons, will be useful and important for characterizing mutations in families identified as exhibiting a high frequency of cancer.

Subsequent to our discovery of a cancer conferring mutation in hMLH1, studies by others have resulted in the characterization of at least 5 additional mutations in hMLH1, each of which appears to have conferred cancer susceptibility to individuals in at least one HNPCC family. For example, Papadopoulos et al. indentified such as a mutation, characterized by an in-frame deletion of 165 base pairs between codons 578 to 632. In another family, Papadopoulos et al. observed an hMLH1 mutation, characterized by a frame shift and substitution of new amino acids, namely, a 4 base pair deletion between codons 727 and 728. Papadopoulos et al. also reports an hMLH1 cancer linked mutation, characterized by an extension of the COOH terminus, namely, a 4 base pair insertion between codons 755 and 756.³⁸

In summary, we have shown that DNA mismatch repair gene hMLH1 which is likely to be the hereditary nonpolyposis colon cancer gene previously localized by linkage analysis to chromosome 3p21-23.³ Availability of the hMLH1 gene sequence will facilitate the screening of HNPCC families for cancer-linked mutations. In addition, although loss of heterozygosity (LOH) of linked markers is not a feature of either the 2p or 3p forms of HNPCC,^(3,6) LOH involving the 3p21.3-23 region has been observed in several human cancers.426 This suggests the possibility that hMLH1 mutation may play some role in these tumors.

Human PMS1

Human PMS1 was isolated using the procedures discussed with reference to FIG. 1. FIG. 10 shows the entire hPMS1 cDNA nucleotide sequence. FIG. 11 shows an alignment of the predicted human and yeast PMS1 protein sequences. We determined by FISH analysis that human PMS1 is located on chromosome 7. Subsequent to our discovery of hPMS1, others have identified mutations in the gene which appear to confer HNPCC susceptibility.³⁹

Distinguishing Mutations From Polymorphisms

For studies of cancer susceptibility and for tumor identification and characterization, it is important to distinguish “mutations” from “polymorphisms”. A “mutation” produces a “non-wild-type allele” of a gene. A non-wild-type allele of a gene produces a transcript and/or a protein product that does not function normally within a cell. “Mutations” can be any alteration in nucleotide sequence including insertions, deletions, substitutions, and rearrangements.

“Polymorphisms”, on the other hand, are sequence differences that are found within the population of normally-functioning (i.e., “wild-type”) genes. Some polymorphisms result from the degeneracy of the nucleic acid code. That is, given that most amino acids are encoded by more than one triplet codon, many different nucleotide sequences can encode the same polypeptide. Other polymorphisms are simply sequence differences that do not have a significant effect on the function of the gene or encoded polypeptide. For example, polypeptides can often tolerate small insertions or deletions, or “conservative” substitutions in their amino acid sequence without significantly altering function of the polypeptide.

“Conservative” substitutions are those in which a particular amino acid is substituted by another amino acid of similar chemical characteristics. For example, the amino acids are often characterized as “non-polar (hydrophobic)” including alanine, leucine, isoleucine, valine, proline, phenylaline, tryptophan, and methionine; “polar neutral”, including glycine, serine, threonine, cysteine, tyrosine, asparagine, and glutamine; “positively charged (basic)”, including arginine, lysine, and histidine; and “negatively charged (acidic)”, including aspartic acid and glutamic acid. A substitution of one amino acid for another amino acid in the same group is generally considered to be “conservative”, particularly if the side groups of the two relevant amino acids are of a similar size.

The first step in identifying a mutation or polymorphism in a mismatch repair gene sequence involves identification, using available techniques including those described herein, of a mismatch repair gene, (or gene fragment) sequence that differs from a known, normal (e.g. wild-type) sequence of the same mismatch repair gene (or gene fragment). For example, a hMLH1 gene (or gene fragment) sequence could be identified that differs in at least one nucleotide position from a known normal (e.g. wild-type) hMLH1 sequence such as any of SEQ. ID NOS: 6-24.

Mutations can be distinguished from polymorphisms using any of a variety of methods, perhaps the most direct of which is data collection and correlation with tumor development. That is, for example, a subject might be identified whose hMLH1 gene sequence differs from a sequence reported in SEQ. ID. NOS: 6-24, but who does not have cancer and has no family history of cancer. Particularly if other, preferably senior, members of that subject's family have HMLH1 gene sequences that differ from SEQ. ID NOS: 6-24 in the same way(s), it is likely that subject's HMLH1 gene sequence could be categorized as a “polymorphism”. If other, unrelated individuals are identified with the same hMLH1 gene sequence and no family history of cancer, the categorization may be confirmed.

Mutations that are responsible for conferring genetic susceptibility to cancer can be identified because, among other things, such mutations are likely to be present in all tissues of an affected individual and in the germ line of at least one of that individual's parents, and are not likely to be found in unrelated families with no history of cancer.

When distinguishing mutations from polymorphisms, it can sometimes be valuable to evaluate a particular sequence difference in the presence of at least one known mismatch repair gene mutation. In some instances, a particular sequence change will not have a detectable effect (i.e., will appear to be a polymorphism) when assayed alone, but will, for example, increase the penetrance of a known mutation, such that individuals carrying both the apparent polymorphism difference and a known mutation have higher probability of developing cancer than do individuals carrying only the mutation. Sequence differences that have such an effect are properly considered to be mutations, albeit weak ones.

As discussed above and previously (U.S. patent application Ser. Nos. 08/168,877 and 08/209,521), mutations in mismatch repair genes or gene products produced non-wild-type versions of those genes or gene products. Some mutations can therefore be distinguished from polymorphisms by their functional characteristics in in vivo or in vitro mismatch repair assays. Any available mismatch repair assay can be used to analyze these characteristics.⁴⁹⁻⁶³ It is generally desirable to utilize more than one mismatch repair assay before classifying a sequence change as a polymorphism, since some mutations will have effects that will not be observed in all assays.

For example, a mismatch repair gene containing a mutation would not be expected to be able to replace an endogenous copy of the same gene in a host cell without detectably affecting mismatch repair in that cell; whereas a mismatch repair gene containing a sequence polymorphism would be expected to be able to replace an endogenous copy of the same gene in a host cell without detectably affecting mismatch repair in that cell. We note that for such “replacement” studies, it is generally desirable to introduce the gene to be tested into a host cell of the same (or at least closely related) species as the cell from which the test gene was derived, to avoid complications due to, for example, the inability of a gene product from one species to interact with other mismatch repair gene products from another species. Similarly, a mutant mismatch repair protein would not be expected to function normally in an in vitro mismatch repair system (preferably from a related organism); whereas a polymorphic mismatch repair protein would be expected to function normally.

The methods described herein and previously allow identification of different kinds of mismatch repair gene mutations. The following examples illustrate protocols for distinguishing mutations from polymorphisms in DNA mismatch repair genes.

EXAMPLE 3

We have developed a system for testing in yeast, S. cerevisiae the functional significance of mutations found in either the hMLH1 or hPMS1 genes. The system is described in this application using as an example, the serine (SER) to phenylalanine (PHE) causing mutation in hMLH1 that we found in a family with HNPCC, as described above. We have derived a yeast strain that it is essentially deleted for its MLH1 gene and hence is a strong mutator i.e., 1000 fold above the normal rate in a simple genetic marker assay involving reversion from growth dependence on a given amino acid to independence (reversion of the hom3-10 allele, Prolla, Christie and Liskay, Mol Cell Biol, 14:407-415, 1994). When we placed the normal yeast MLH1 gene (complete with all known control regions) on a yeast plasma that is stably maintained as a single copy into the MLH1-deleted strain, the mutator phenotype is fully corrected using the reversion to amino acid independence assay. However, if we introduce a deleted copy of the yeast MLH1 there is no correction. We next tested the mutation that in the HNPCC family caused a SER to PHE alteration. We found that the resultant mutant yeast protein cannot correct the mutator phenotype, strongly suggesting that the alteration from the wild-type gene sequence probably confers cancer susceptibility, and is therefore classified as a mutation, not a polymorphism. We subsequently tested proteins engineered to contain other amino acids at the “serene” position and found that most changes result in a fully mutant, or at least partially mutant phenotype.

As other “point” mutations in MLH1 and PMS1 genes are found in cancer families, they can be engineered into the appropriate yeast homolog gene and their consequence on protein function studied. In addition, we have identified a number of highly conserved amino acids in both the MLH1 and PMS1 genes. We also have evidence that hMLH1 interacts with yeast PMS1. This finding raises the possibility that mutations observed in the hMLH1 gene can be more directly tested in the yeast system. We plan to systematically make mutations that will alter the amino acid at these conserved positions and determine what amino acid substitutions are tolerated and which are not. By collecting mutation information relating to hMLH1 and hPMS1, both by determining and documenting actual found mutations in HNPCC families, and by artificially synthesizing mutants for testing in experimental systems, it may be eventually possible to practice a cancer susceptibility testing protocol which, once the individuals hMLH1 or hPMS1 structure is determined, only requires comparison of that structure to known mutation versus polymorphism data.

EXAMPLE 4

Another method which we have employed to study physical interactions between hMLH1 and hPMS1, can also be used to study whether a particular alteration in a gene product results in a change in the degree of protein-protein interaction. Information concerning changes in protein-protein interaction may demonstrate or confirm whether a particular genomic variation is a mutation or a polymorphism. Following our labs findings on the interaction between yeast MLH1 and PMS1 proteins in vitro and in vivo, (U.S. patent application Ser. No. 08/168,877), the interaction between the human counterparts of these two DNA mismatch repair proteins was tested. The human MLH1 and human PMS1 proteins were tested for in vitro interaction using maltose binding protein (MBP) affinity chromatography. hMLH1 protein was prepared as an MBP fusion protein, immobilized on an amylose resin column via the MBP, and tested for binding to hPMS1, synthesized in vitro. The hPMS1 protein bound to the MBP-hMLH1 matrix, whereas control proteins showed no affinity for the matrix. When the hMLH1 protein, translated in vitro, was passed over an MBP-hPMS1 fusion protein matrix, the hMLH1 protein bound to the MBP-hPMS1 matrix, whereas control proteins did not.

Potential in vivo interactions between hMLH1 and hPMS1 were tested using the yeast “two hybrid” system.28 Our initial results indicate that hMLH1 and hPMS1 interact in vivo in yeast. The same system can also be used to detect changes in protein-protein interaction which result from changes in gene or gene product structure and which have yet to be classified as either a polymorphism or a mutation which confers cancer susceptibility.

Detection of HNPCC Families and Their Mutation(s)

It has been estimated that approximately 1,000,000 individuals in the United States carry (are heterozygous for) an HNPCC mutant gene.²⁹ Furthermore, estimates suggest that 50-60% of HNPCC families segregate mutations in the MSH2 gene that resides on chromosome 2p.^(1,2) Another significant fraction appear to be associated with the HNPCC gene that maps to chromosome 3p21-22, presumably due to hMLH1 mutations such as the C to T transition discussed above. Identification of families that segregate mutant alleles of either the hMSH2 or HMLH1 gene, and the determination of which individuals in these families actually have the mutation will be of great utility in the early intervention into the disease. Such early intervention will likely include early detection through screening and aggressive follow-up treatment of affected individuals. In addition, determination of the genetic basis for both familial and sporadic tumors could direct the method of therapy in the primary tumor, or in recurrences.

Initially, HNPCC candidate families will be diagnosed partly through the study of family histories, most likely at the local level, e.g., by hospital oncologists. One criterion for HNPCC is the observation of microsatellite instability in individual's tumors.^(3,6) The presenting patient would be tested for mutations in hMSH2, hMLH1, hPMS1 and other genes involved in DNA mismatch repair as they are identified. This is most easily done by sampling blood from the individual. Also highly useful would be freshly frozen tumor tissue. It is important to note for the screening procedure, that affected individuals are heterozygous for the offending mutation in their normal tissues.

The available tissues, e.g., blood and tumor, are worked up for PCR-based mutation analysis using one or both of the following procedures:

1) Linkage Analysis with a Microsatellite Marker Tightly Linked to the hMLH1 Gene.

One approach to identify cancer prone families with a hMLH1 mutation is to perform linkage analysis with a highly polymorphic marker located within or tightly linked to hMLH1. Microsatellites are highly polymorphic and therefore are very useful as markers in linkage analysis. Because we possess the hMLH1 gene on a single large genomic fragment in a P1 phage clone (˜100 kbp), it is very likely that one or more microsatellites, e.g. tracts of dinucleotide repeats, exist within, or very close to, the hMLH1 gene. At least one such microsatellite has been reported.38 Once such markers have been identified, PCR primers will be designed to amplify the stretches of DNA containing the microsatellites. DNA of affected and unaffected individuals from a family with a high frequency of cancer will be screened to determine the segregation of the MLH1 markers and the presence of cancer. The resulting data can be used to calculate a lod score and hence determine the likelihood of linkage between hMLH1 and the occurrence of cancer. Once linkage is established in a given family, the same polymorphic marker can be used to test other members of the kindred for the likelihood of their carrying the hMLH1 mutation.

2) Sequencing of Reverse Transcribed cDNA.

a) RNA from affected individuals, unaffected and unrelated individuals is reverse transcribed (RT'd), followed by PCR to amplify the cDNA in 4-5 overlapping portions.^(34,37) It should be noted that for the purposes of PCR, many different oligonucleotide primer pair sequences may potentially be used to amplify relevant portions of an individual's hMLH1 or hPMS1 gene for genetic screening purposes. With the knowledge of the cDNA structures for the genes, it is a straight-forward exercise to construct primer pairs which are likely to be effective for specifically amplifying selected portions of the gene. While primer sequences are typically between 20 to 30 bases long, it may be possible to use shorter primers, potentially as small as approximately 13 bases, to amplify specifically selected gene segments. The principal limitation on how small a primer sequence may be is that it must be long enough to hybridize specifically to the targeted gene segment. Specificity of PCR is generally improved by lengthening primers and/or employing nested pairs of primers.

The PCR products, in total representing the entire cDNA, are then sequenced and compared to known wild-type sequences. In most cases a mutation will be observed in the affected individual. Ideally, the nature of mutation will indicate that it is likely to inactivate the gene product. Otherwise, the possibility that the alteration is not simply a polymorphism must be determined.

b) Certain mutations, e.g., those affecting splicing or resulting in translation stop codons, can destabilize the messenger RNA produced from the mutant gene and hence comprise the normal RT-based mutation detection method. One recently reported technique can circumvent this problem by testing whether the mutant cDNA can direct the synthesis of normal length protein in a coupled in vitro transcription/translation system.³²

3) Direct Sequencing of Genomic DNA.

A second route to detect mutations relies on examining the exons and the intron/exon boundaries by PCR cycle sequencing directly off a DNA template.^(1,2) This method requires the use of oligonucleotide pairs, such as those described in Tables 2 and 3 above, that amplify individual exons for direct PCR cycle sequencing. The method depends upon genomic DNA sequence information at each intron/exon boundary (50 bp, or greater, for each boundary). The advantage of the technique is two fold. First, because DNA is more stable than RNA, the condition of the material used for PCR is not as important as it is for RNA-based protocols. Second, most any mutation within the actual transcribed region of the gene, including those in an intron affecting splicing, will be detectable.

For each candidate gene, mutation detection may require knowledge of both the entire cDNA structure, and all intron/exon boundaries of the genomic structure. With such information, the type of causal mutation in a particular family can be determined. In turn, a more specific and efficient mutation detection scheme can be adapted for the particular family. Screening for the disease (HNPCC) is complex because it has a genetically heterogeneous basis in the sense that more than one gene is involved, and for each gene, multiple types of mutations are involved.² Any given family is highly likely to segregate one particular mutation. However, as the nature of the mutation in multiple families is determined, the spectrum of the most prevalent mutations in the population will be determined. In general, determination of the most frequent mutations will direct and streamline mutation detection.

Because HNPCC is so prevalent in the human population, carrier detection at birth could become part of standardized neonatal testing. Families at risk can be identified and all members not previously tested can be tested. Eventually, all affected kindreds could be determined.

Mode of Mutation Screening and Testing

DNA-based Testing

Initial testing, including identifying likely HNPCC families by standard diagnosis and family history study, will likely be done in local and smaller DNA diagnosis laboratories. However, large scale testing of multiple family members, and certainly population wide testing, will ultimately require large efficient centralized commercial facilities.

Tests will be developed based on the determination of the most common mutations for the major genes underlying HNPCC, including at least the hMSH2 gene on chromosome 2p and the MLH1 gene on chromosome 3p. A variety of tests are likely to be developed. For example, one possibility is a set of tests employing oligonucleotide hybridizations that distinguish the normal vs. mutant alleles.³³ As already noted, our knowledge of the nucleotide structures for hMLH1, hPMS1 and hMSH2 genes makes possible the design of numerous oligonucleotide primer pairs which may be used to amplify specific portions of an individual's mismatch repair gene for genetic screening and cancer risk analysis. Our knowledge of the genes′ structures also makes possible the design of labeled probes which can be quickly used to determine the presence or absence of all or a portion of one of the DNA mismatch repair genes. For example, allele-specific oligomer probes (ASO) may be designed to distinguish between alleles. ASOs are short DNA segments that are identical in sequence except for a single base difference that reflects the difference between normal and mutant alleles. Under the appropriate DNA hybridization conditions, these probes can recognize a single base difference between two otherwise identical DNA sequences. Probes can be labeled radioactively or with a variety of non-radioactive reporter molecules, for example, fluorescent or chemiluminescent moieties. Labeled probes are then used to analyze the PCR sample for the presence of the disease-causing allele. The presence or absence of several different disease-causing genes can readily be determined in a single sample. The length of the probe must be long enough to avoid non-specific binding to nucleotide sequences other than the target. All tests will depend ultimately on accurate and complete structural information relating to hMLH1, hMSH2, hPMS1 and other DNA mismatch repair genes implicated in HNPCC.

Protein Detection-Based Screening

Tests based on the functionality of the protein product, per se, may also be used. The protein-examining tests will most likely utilize antibody reagents specific to either the hMLH1, hPMS1 and hMSH2 proteins or other related “cancer” gene products as they are identified.

For example, a frozen tumor specimen can be cross-sectioned and prepared for antibody staining using indirect fluorescence techniques. Certain gene mutations are expected to alter or destabilize the protein structure sufficiently such as to give an altered or reduced signal after antibody staining. It is likely that such tests will be performed in cases where gene involvement in a family's cancer has yet to be established. We are in the process of developing diagnostic monoclonal antibodies against the human MLH1 and PMS1 proteins. We are overexpressing MLH1 and PMS1 human proteins in bacteria. We will purify the proteins, inject them into mice and derive protein specific monoclonal antibodies which can be used for diagnostic and research purposes.

Identification and Characterization of DNA Mismatch Repair Tumors

In addition to their usefulness in diagnosing cancer susceptibility in a subject, nucleotide sequences that are homologous to a bacterial mismatch repair gene can be valuable for, among other things, use in the identification and characterization of mismatch-repair-defective tumors. Such identification and characterization is valuable because mismatch-repair-defective tumors may respond better to particular therapy regimens. For example, mismatch-repair-defective tumors might be sensitive to DNA damaging agents, especially when administered in combination with other therapeutic agents.

Defects in mismatch repair genes need not be present throughout an individual's tissues to contribute to tumor formation in that individual. Spontaneous mutation of a mismatch repair gene in a particular cell or tissue can contribute to tumor formation in that tissue. In fact, at least in some cases, a single mutation in a mismatch repair gene is not sufficient for tumor development. In such instances, an individual with a single mutation in a mismatch repair gene is susceptible to cancer, but will not develop a tumor until a secondary mutation occurs. Additionally, in some instances, the same mismatch repair gene mutation that is strictly tumor-associated in an individual will be responsible for conferring cancer susceptibility in a family with a hereditary predisposition to cancer development.

In yet another aspect of the invention, the sequence information we have provided can be used with methods known in the art to analyze tumors (or tumor cell lines) and to identify tumor-associated mutations in mismatch repair genes. Preferably, it is possible to demonstrate that these tumor-associated mutations are not present in non-tumor tissues from the same individual. The information described in this application is particularly useful for the identification of mismatch repair gene mutations within tumors (or tumor cell lines) that display genomic instability of short repeated DNA elements.

The sequence information and testing protocols of the present invention can also be used to determine whether two tumors are related, i.e., whether a second tumor is the result of metastasis from an earlier found first tumor which exhibits a particular DNA mismatch repair gene mutation.

Isolating Additional Genes of Related Function

Proteins that interact physically with either hMLH1 and/or hPMS1, are likely to be involved in DNA mismatch repair. By analogy to HMLH1 and hMSH2, mutations in the genes which encode for such proteins would be strong candidates for potential cancer linkage. A powerful molecular genetic approach using yeast, referred to as a “two-hybrid system”, allows the relatively rapid detection and isolation of genes encoding proteins that interact with a gene product of interest, e.g., hMLH1.²⁸

The two-hybrid system involves two plasmid vectors each intended to encode a fusion protein. Each of the two vectors contains a portion, or domain, of a transcription activator. The yeast cell used in the detection scheme contains a “reporter” gene. The activator alone cannot activate transcription. However, if the two domains are brought into close proximity then transcription may occur. The cDNA for the protein of interest, e.g., hMLH1 is inserted within a reading frame in one of the vectors. This is termed the “bait”. A library of human cDNAs, inserted into a second plasmid vector so as to make fusions with the other domain of the transcriptional activator, is introduced into the yeast cells harboring the “bait” vector. If a particular yeast cell receives a library member that contains a human cDNA encoding a protein that interacts with hMLH1 protein, this interaction will bring the two domains of the transcriptional activator into close proximity, activate transcription of the reporter gene and the yeast cell will turn blue. Next, the insert is sequenced to determine whether it is related to any sequence in the data base. The same procedure can be used to identify yeast proteins in DNA mismatch repair or a related process. Performing the yeast and human “hunts” in parallel has certain advantages. The function of novel yeast homologs can be quickly determined in yeast by gene disruption and subsequent examination of the genetic consequences of being defective in the new found gene. These yeast studies will help guide the analysis of novel human “hMLH1-or hPMS1-interacting” proteins in much the same way that the yeast studies on PMS1 and MLH1 have influenced our studies of the human MLH1 and PMS1 genes.

Production of Antibodies

By using our knowledge of the DNA sequences for HMLH1 and hPMS1, we can synthesize all or portions of the predicted protein structures for the purpose of producing antibodies. One important use for antibodies directed to hMLH1 and hPMS1 proteins will be for capturing other proteins which may be involved in DNA mismatch repair. For example, by employing coimmuno-precipitation techniques, antibodies directed to either hMLH1 or hPMS1 may be precipitated along with other associated proteins which are functionally and/or physically related. Another important use for antibodies will be for the purpose of isolating hMLH1 and hPMS1 proteins from tumor tissue. The hMLH1 and hPMS1 proteins from tumors can then be characterized for the purpose of determining appropriate treatment strategies.

As already mentioned, we are in the process of developing monoclonal antibodies directed to the hMLH1 and hPMS1 proteins. As discussed in prior U.S. patent application Ser. No. 08/209,521, we have produced polyclonal antibodies directed to the human and mouse forms of PMS1 protein.

DNA Mismatch Repair Defective Mice

In order to create a experimental model system for studying DNA mismatch repair defects and resultant cancer in a whole animal system we have derived DNA mismatch repair defective mice using embryonic stem (ES) cell technology. Using genomic DNA containing a portion of the mPMS1 gene we constructed a vector that upon homologous recombination causes disruption of the chromosomal mPMS1 gene. Mouse ES cells from the 129 mouse strain were confirmed to contain a disrupted mPMS1 allele. The ES cells were injected into C57/BL6 host blastocysts to produce animals that were chimeric or a mixture of 129 and C57/BL6 cells. The incorporation of the ES cells was determined by the presence of patches of agouti coat coloring (indicative of ES cell contribution). All male chimeras were bred with C57/BL6 female mice.

Subsequently, twelve offspring (F₂) were born in which the agouti coat color was detected indicating the germline transmission of genetic material from the ES cells. Analysis of DNA extracted from the tail tips of the twelve offspring indicated that six of the animals were heterozygous (contained one wild-type and one mutant allele) for the mPMS1 mutation. Of the six heterozygous animals, three were female, (animals F₂-8, F₂-11 and F₂-12) and three were males (F₂, F₂-10 and F₂-13). Four breeding pens were set up to obtain mice that were homozygous for mPMS1 mutation, and additional heterozygous mice. Breeding pen #1 which contained animals F₂-11 and F₂-10, yielded a total of thirteen mice in three litters, four of which have been genotyped. Breeding pen #2 (animals F₂-8 and F₂-13) gave twenty-two animals and three litters, three of which have been genotyped. Of the seven animals genotyped, three homozygous female animals have been identified. One animal died at six weeks of age from unknown causes. The remaining homozygous females are alive and healthy at twelve weeks of age. The results indicate that mPMS1 homozygous defective mice are viable.

Breeding pens #3 and #4 were used to backcross the mPMS1 mutation into the C57/BL6 background. Breeding pen #3 (animal F₂₋₁₂ crossed to a C57/BL6 mouse) produced twenty-one animals in two litters, nine of which have been genotyped. Breeding pen #4 (animal F₂₋₆ crossed with a C57/BL6 mouse) gave eight mice. In addition, the original male chimera (breeding pen #5) has produced thirty-one additional offspring.

To genotype the animals, a series of PCR primers have been developed that are used to identify mutant and wild-type mPMS1 genes. They are: (SEQ. ID NOS: 139-144, respectively)

Primer 1: 5′TTCGGTGACAGATTTGTAAATG-3′

Primer 2: 5′TTTACGGAGCCCTGGC-3′

Primer 3: 5′TCACCATAAAAATAGTITCCCG-3′

Primer 4: 5′TCCTGGATCATATIFTCTGAGC-3′

Primer 5: 5′TTrCAGGTATGTCCTGTTACCC-3′

Primer 6: 5′TGAGGCAGCTTTAAGAAACTC-3′

Primers 1+2 (5′targeted)

Primers 1+3 (5′untargeted)

Primers 4+5 (3′targeted)

Primers 4+6 (3′untargeted)

The mice we have developed provide an animal model system for studying the consequences of defects in DNA mismatch repair and resultant HNPCC. The long term survival of mice homozygous and heterozygous for the mPMS1 mutation and the types and timing of tumors in these mice will be determined. The mice will be screened daily for any indication of cancer onset as indicated by a hunched appearance in combination with deterioration in coat condition. These mice carrying mPMS1 mutation will be used to test the effects of other factors, environmental and genetic, on tumor formation. For example, the effect of diet on colon and other type of tumors can be compared for normal mice versus those carrying mPMS1 mutation either in the heterozygous or homozygous genotype. In addition, the mPMS1 mutation can be put into different genetic backgrounds to learn about interactions between genes of the mismatch repair pathway and other genes involved in human cancer, for example, p53. Mice carrying mPMS1 mutations will also be useful for testing the efficacy of somatic gene therapy on the cancers that arise in mice, for example, the expected colon cancers. Further, isogenic fibroblast cell lines from the homozygous and heterozygous mPMS1 mice can be established for use in various cellular studies, including the determination of spontaneous mutation rates.

We are currently constructing a vector for disrupting the mouse mMLH1 gene to derive mice carrying mutation in mMLH1. We will compare mice carrying defects in mPMS1 to mice carrying defects in mMLH1. In addition, we will construct mice that carry mutations in both genes to see whether there is a synergistic effect of having mutations in two HNPCC genes. Other studies on the mMLH1 mutant mice will be as described above for the mPMS1 mutant mice.

149 361 amino acids amino acid single linear cDNA unknown 1 Met Pro Ile Gln Val Leu Pro Pro Gln Leu Ala Asn Gln Ile Ala Al 1 5 10 15 Gly Glu Val Val Glu Arg Pro Ala Ser Val Val Lys Glu Leu Val Gl 20 25 30 Asn Ser Leu Asp Ala Gly Ala Thr Arg Val Asp Ile Asp Ile Glu Ar 35 40 45 Gly Gly Ala Lys Leu Ile Arg Ile Arg Asp Asn Gly Cys Gly Ile Ly 50 55 60 Lys Glu Glu Leu Ala Leu Ala Leu Ala Arg His Ala Thr Ser Lys Il 65 70 75 80 Ala Ser Leu Asp Asp Leu Glu Ala Ile Ile Ser Leu Gly Phe Arg Gl 85 90 95 Glu Ala Leu Ala Ser Ile Ser Ser Val Ser Arg Leu Thr Leu Thr Se 100 105 110 Arg Thr Ala Glu Gln Ala Glu Ala Trp Gln Ala Tyr Ala Glu Gly Ar 115 120 125 Asp Met Asp Val Thr Val Lys Pro Ala Ala His Pro Val Gly Thr Th 130 135 140 Leu Glu Val Leu Asp Leu Phe Tyr Asn Thr Pro Ala Arg Arg Lys Ph 145 150 155 160 Met Arg Thr Glu Lys Thr Glu Phe Asn His Ile Asp Glu Ile Ile Ar 165 170 175 Arg Ile Ala Leu Ala Arg Phe Asp Val Thr Leu Asn Leu Ser His As 180 185 190 Gly Lys Leu Val Arg Gln Tyr Arg Ala Val Ala Lys Asp Gly Gln Ly 195 200 205 Glu Arg Arg Leu Gly Ala Ile Cys Gly Thr Pro Phe Leu Glu Gln Al 210 215 220 Leu Ala Ile Glu Trp Gln His Gly Asp Lys Thr Lys Arg Gly Trp Va 225 230 235 240 Ala Asp Pro Asn His Thr Thr Thr Ala Leu Thr Glu Ile Gln Tyr Cy 245 250 255 Tyr Val Asn Gly Arg Met Met Arg Asp Arg Leu Ile Asn His Ala Il 260 265 270 Arg Gln Ala Cys Glu Asp Lys Leu Gly Ala Asp Gln Gln Pro Ala Ph 275 280 285 Val Leu Tyr Leu Glu Ile Asp Pro His Gln Val Asp Val Asn Val Hi 290 295 300 Pro Ala Lys His Glu Val Arg Phe His Gln Ser Arg Leu Val His As 305 310 315 320 Phe Ile Tyr Gln Gly Val Leu Ser Val Leu Gln Gln Gln Thr Glu Th 325 330 335 Ala Leu Pro Leu Glu Glu Ile Ala Pro Ala Pro Arg His Val Gln Gl 340 345 350 Asn Arg Ile Ala Ala Gly Arg Asn His 355 360 538 amino acids amino acid single linear cDNA unknown 2 Met Ser His Ile Ile Glu Leu Pro Glu Met Leu Ala Asn Gln Ile Al 1 5 10 15 Ala Gly Glu Val Ile Glu Arg Pro Ala Ser Val Cys Lys Glu Leu Va 20 25 30 Glu Asn Ala Ile Asp Ala Gly Ser Ser Gln Ile Ile Ile Glu Ile Gl 35 40 45 Glu Ala Gly Leu Lys Lys Val Gln Ile Thr Asp Asn Gly His Gly Il 50 55 60 Ala His Asp Glu Val Glu Leu Ala Leu Arg Arg His Ala Thr Ser Ly 65 70 75 80 Ile Lys Asn Gln Ala Asp Leu Phe Arg Ile Arg Thr Leu Gly Phe Ar 85 90 95 Gly Glu Ala Leu Pro Ser Ile Ala Ser Val Ser Val Leu Thr Leu Le 100 105 110 Thr Ala Val Asp Gly Ala Ser His Gly Thr Lys Leu Val Ala Arg Gl 115 120 125 Gly Glu Val Glu Glu Val Ile Pro Ala Thr Ser Pro Val Gly Thr Ly 130 135 140 Val Cys Val Glu Asp Leu Phe Phe Asn Thr Pro Ala Arg Leu Lys Ty 145 150 155 160 Met Lys Ser Gln Gln Ala Glu Leu Ser His Ile Ile Asp Ile Val As 165 170 175 Arg Leu Gly Leu Ala His Pro Glu Ile Ser Phe Ser Leu Ile Ser As 180 185 190 Gly Lys Glu Met Thr Arg Thr Ala Gly Thr Gly Gln Leu Arg Gln Al 195 200 205 Ile Ala Gly Ile Tyr Gly Leu Val Ser Ala Lys Lys Met Ile Glu Il 210 215 220 Glu Asn Ser Asp Leu Asp Phe Glu Ile Ser Gly Phe Val Ser Leu Pr 225 230 235 240 Glu Leu Thr Arg Ala Asn Arg Asn Tyr Ile Ser Leu Phe Ile Asn Gl 245 250 255 Arg Tyr Ile Lys Asn Phe Leu Leu Asn Arg Ala Ile Leu Asp Gly Ph 260 265 270 Gly Ser Lys Leu Met Val Gly Arg Phe Pro Leu Ala Val Ile His Il 275 280 285 His Ile Asp Pro Tyr Leu Ala Asp Val Asn Val His Pro Thr Lys Gl 290 295 300 Glu Val Arg Ile Ser Lys Glu Lys Glu Leu Met Thr Leu Val Ser Gl 305 310 315 320 Ala Ile Ala Asn Ser Leu Lys Glu Gln Thr Leu Ile Pro Asp Ala Le 325 330 335 Glu Asn Leu Ala Lys Ser Thr Val Arg Asn Arg Glu Lys Val Glu Gl 340 345 350 Thr Ile Leu Pro Leu Ser Phe Pro Glu Leu Glu Phe Phe Gly Gln Me 355 360 365 His Gly Thr Tyr Leu Phe Ala Gln Gly Arg Asp Gly Leu Tyr Ile Il 370 375 380 Asp Gln His Ala Ala Gln Glu Arg Val Lys Tyr Glu Glu Tyr Arg Gl 385 390 395 400 Ser Ile Gly Asn Val Asp Gln Ser Gln Gln Gln Leu Leu Val Pro Ty 405 410 415 Ile Phe Glu Phe Pro Ala Asp Asp Ala Leu Arg Leu Lys Glu Arg Me 420 425 430 Pro Leu Leu Glu Glu Val Gly Val Phe Leu Ala Glu Tyr Gly Glu As 435 440 445 Gln Phe Ile Leu Arg Glu His Pro Ile Trp Met Ala Glu Glu Glu Il 450 455 460 Glu Ser Gly Ile Tyr Glu Met Cys Asp Met Leu Leu Leu Thr Lys Gl 465 470 475 480 Val Ser Ile Lys Lys Tyr Arg Ala Glu Leu Ala Ile Met Met Ser Cy 485 490 495 Lys Arg Ser Ile Lys Ala Asn His Arg Ile Asp Asp His Ser Ala Ar 500 505 510 Gln Leu Leu Tyr Gln Leu Ser Gln Cys Asp Asn Pro Tyr Asn Cys Pr 515 520 525 His Gly Arg Pro Val Leu Val His Phe Thr 530 535 607 amino acids amino acid single linear DNA (genomic) unknown 3 Met Phe His His Ile Glu Asn Leu Leu Ile Glu Thr Glu Lys Arg Cy 1 5 10 15 Lys Gln Lys Glu Gln Arg Tyr Ile Pro Val Lys Tyr Leu Phe Ser Me 20 25 30 Thr Gln Ile His Gln Ile Asn Asp Ile Asp Val His Arg Ile Thr Se 35 40 45 Gly Gln Val Ile Thr Asp Leu Thr Thr Ala Val Lys Glu Leu Val As 50 55 60 Asn Ser Ile Asp Ala Asn Ala Asn Gln Ile Glu Ile Ile Phe Lys As 65 70 75 80 Tyr Gly Leu Glu Ser Ile Glu Cys Ser Asp Asn Gly Asp Gly Ile As 85 90 95 Pro Ser Asn Tyr Glu Phe Leu Ala Leu Lys His Tyr Thr Ser Lys Il 100 105 110 Ala Lys Phe Gln Asp Val Ala Lys Val Gln Thr Leu Gly Phe Arg Gl 115 120 125 Glu Ala Leu Ser Ser Leu Cys Gly Ile Ala Lys Leu Ser Val Ile Th 130 135 140 Thr Thr Ser Pro Pro Lys Ala Asp Lys Glu Leu Tyr Asp Met Val Gl 145 150 155 160 His Ile Thr Ser Lys Thr Thr Thr Ser Arg Asn Lys Gly Thr Thr Va 165 170 175 Leu Val Ser Gln Leu Phe His Asn Leu Pro Val Arg Gln Lys Glu Ph 180 185 190 Ser Lys Thr Phe Lys Arg Gln Phe Thr Lys Cys Leu Thr Val Ile Gl 195 200 205 Gly Tyr Ala Ile Ile Asn Ala Ala Ile Lys Phe Ser Val Trp Asn Il 210 215 220 Thr Pro Lys Gly Lys Lys Asn Leu Ile Leu Ser Thr Met Arg Asn Se 225 230 235 240 Ser Met Arg Lys Asn Ile Ser Ser Val Phe Gly Ala Gly Gly Met Ar 245 250 255 Gly Glu Leu Glu Val Asp Leu Val Leu Asp Leu Asn Pro Phe Lys As 260 265 270 Arg Met Leu Gly Lys Tyr Thr Asp Asp Pro Asp Phe Leu Asp Leu As 275 280 285 Tyr Lys Ile Arg Val Lys Gly Tyr Ile Ser Gln Asn Ser Phe Gly Cy 290 295 300 Gly Arg Asn Ser Lys Asp Arg Gln Phe Ile Tyr Val Asn Lys Arg Pr 305 310 315 320 Val Glu Tyr Ser Thr Leu Leu Lys Cys Cys Asn Glu Val Tyr Lys Th 325 330 335 Phe Asn Asn Val Gln Phe Pro Ala Val Phe Leu Asn Leu Glu Leu Pr 340 345 350 Met Ser Leu Ile Asp Val Asn Val Thr Pro Asp Lys Arg Val Ile Le 355 360 365 Leu His Asn Glu Arg Ala Val Ile Asp Ile Phe Lys Thr Thr Leu Se 370 375 380 Asp Tyr Tyr Asn Arg Gln Glu Leu Ala Leu Pro Lys Arg Met Cys Se 385 390 395 400 Gln Ser Glu Gln Gln Ala Gln Lys Arg Leu Leu Thr Glu Val Phe As 405 410 415 Asp Asp Phe Lys Lys Met Glu Val Val Gly Gln Phe Asn Leu Gly Ph 420 425 430 Ile Ile Val Thr Arg Lys Val Asp Asn Lys Ser Asp Leu Phe Ile Va 435 440 445 Asp Gln His Ala Ser Asp Glu Lys Tyr Asn Phe Glu Thr Leu Gln Al 450 455 460 Val Thr Val Phe Lys Ser Gln Lys Leu Ile Ile Pro Gln Pro Val Gl 465 470 475 480 Leu Ser Val Ile Asp Glu Leu Val Val Leu Asp Asn Leu Pro Val Ph 485 490 495 Glu Lys Asn Gly Phe Lys Leu Lys Ile Asp Glu Glu Glu Glu Phe Gl 500 505 510 Ser Arg Val Lys Leu Leu Ser Leu Pro Thr Ser Lys Gln Thr Leu Ph 515 520 525 Asp Leu Gly Asp Phe Asn Glu Leu Ile His Leu Ile Lys Glu Asp Gl 530 535 540 Gly Leu Arg Arg Asp Asn Ile Arg Cys Ser Lys Ile Arg Ser Met Ph 545 550 555 560 Ala Met Arg Ala Cys Arg Ser Ser Ile Met Ile Gly Lys Pro Leu As 565 570 575 Lys Lys Thr Met Thr Arg Val Val His Asn Leu Ser Glu Leu Asp Ly 580 585 590 Pro Trp Asn Cys Pro His Gly Arg Pro Thr Met Arg His Leu Met 595 600 605 2484 base pairs nucleic acid single linear DNA (genomic) unknown 4 CTTGGCTCTT CTGGCGCCAA AATGTCGTTC GTGGCAGGGG TTATTCGGCG GCTGGACGAG 60 ACAGTGGTGA ACCGCATCGC GGCGGGGGAA GTTATCCAGC GGCCAGCTAA TGCTATCAA 120 GAGATGATTG AGAACTGTTT AGATGCAAAA TCCACAAGTA TTCAAGTGAT TGTTAAAGA 180 GGAGGCCTGA AGTTGATTCA GATCCAAGAC AATGGCACCG GGATCAGGAA AGAAGATCT 240 GATATTGTAT GTGAAAGGTT CACTACTAGT AAACTGCAGT CCTTTGAGGA TTTAGCCAG 300 ATTTCTACCT ATGGCTTTCG AGGTGAGGCT TTGGCCAGCA TAAGCCATGT GGCTCATGT 360 ACTATTACAA CGAAAACAGC TGATGGAAAG TGTGCATACA GAGCAAGTTA CTCAGATGG 420 AAACTGAAAG CCCCTCCTAA ACCATGTGCT GGCAATCAAG GGACCCAGAT CACGGTGGA 480 GACCTTTTTT ACAACATAGC CACGAGGAGA AAAGCTTTAA AAAATCCAAG TGAAGAATA 540 GGGAAAATTT TGGAAGTTGT TGGCAGGTAT TCAGTACACA ATGCAGGCAT TAGTTTCTC 600 GTTAAAAAAC AAGGAGAGAC AGTAGCTGAT GTTAGGACAC TACCCAATGC CTCAACCGT 660 GACAATATTC GCTCCATCTT TGGAAATGCT GTTAGTCGAG AACTGATAGA AATTGGATG 720 GAGGATAAAA CCCTAGCCTT CAAAATGAAT GGTTACATAT CCAATGCAAA CTACTCAGT 780 AAGAAGTGCA TCTTCTTACT CTTCATCAAC CATCGTCTGG TAGAATCAAC TTCCTTGAG 840 AAAGCCATAG AAACAGTGTA TGCAGCCTAT TTGCCCAAAA ACACACACCC ATTCCTGTA 900 CTCAGTTTAG AAATCAGTCC CCAGAATGTG GATGTTAATG TGCACCCCAC AAAGCATGA 960 GTTCACTTCC TGCACGAGGA GAGCATCCTG GAGCGGGTGC AGCAGCACAT CGAGAGCA 1020 CTCCTGGGCT CCAATTCCTC CAGGATGTAC TTCACCCAGA CTTTGCTACC AGGACTTG 1080 GGCCCCTCTG GGGAGATGGT TAAATCCACA ACAAGTCTGA CCTCGTCTTC TACTTCTG 1140 AGTAGTGATA AGGTCTATGC CCACCAGATG GTTCGTACAG ATTCCCGGGA ACAGAAGC 1200 GATGCATTTC TGCAGCCTCT GAGCAAACCC CTGTCCAGTC AGCCCCAGGC CATTGTCA 1260 GAGGATAAGA CAGATATTTC TAGTGGCAGG GCTAGGCAGC AAGATGAGGA GATGCTTG 1320 CTCCCAGCCC CTGCTGAAGT GGCTGCCAAA AATCAGAGCT TGGAGGGGGA TACAACAA 1380 GGGACTTCAG AAATGTCAGA GAAGAGAGGA CCTACTTCCA GCAACCCCAG AAAGAGAC 1440 CGGGAAGATT CTGATGTGGA AATGGTGGAA GATGATTCCC GAAAGGAAAT GACTGCAG 1500 TGTACCCCCC GGAGAAGGAT CATTAACCTC ACTAGTGTTT TGAGTCTCCA GGAAGAAA 1560 AATGAGCAGG GACATGAGGT TCTCCGGGAG ATGTTGCATA ACCACTCCTT CGTGGGCT 1620 GTGAATCCTC AGTGGGCCTT GGCACAGCAT CAAACCAAGT TATACCTTCT CAACACCA 1680 AAGCTTAGTG AAGAACTGTT CTACCAGATA CTCATTTATG ATTTTGCCAA TTTTGGTG 1740 CTCAGGTTAT CGGAGCCAGC ACCGCTCTTT GACCTTGCCA TGCTTGCCTT AGATAGTC 1800 GAGAGTGGCT GGACAGAGGA AGATGGTCCC AAAGAAGGAC TTGCTGAATA CATTGTTG 1860 TTTCTGAAGA AGAAGGCTGA GATGCTTGCA GACTATTTCT CTTTGGAAAT TGATGAGG 1920 GGGAACCTGA TTGGATTACC CCTTCTGATT GACAACTATG TGCCCCCTTT GGAGGGAC 1980 CCTATCTTCA TTCTTCGACT AGCCACTGAG GTGAATTGGG ACGAAGAAAA GGAATGTT 2040 GAAAGCCTCA GTAAAGAATG CGCTATGTTC TATTCCATCC GGAAGCAGTA CATATCTG 2100 GAGTCGACCC TCTCAGGCCA GCAGAGTGAA GTGCCTGGCT CCATTCCAAA CTCCTGGA 2160 TGGACTGTGG AACACATTGT CTATAAAGCC TTGCGCTCAC ACATTCTGCC TCCTAAAC 2220 TTCACAGAAG ATGGAAATAT CCTGCAGCTT GCTAACCTGC CTGATCTATA CAAAGTCT 2280 GAGAGGTGTT AAATATGGTT ATTTATGCAC TGTGGGATGT GTTCTTCTTT CTCTGTAT 2340 CGATACAAAG TGTTGTATCA AAGTGTGATA TACAAAGTGT ACCAACATAA GTGTTGGT 2400 CACTTAAGAC TTATACTTGC CTTCTGATAG TATTCCTTTA TACACAGTGG ATTGATTA 2460 AATAAATAGA TGTGTCTTAA CATA 2484 756 amino acids amino acid single linear protein unknown 5 Met Ser Phe Val Ala Gly Val Ile Arg Arg Leu Asp Glu Thr Val Va 1 5 10 15 Asn Arg Ile Ala Ala Gly Glu Val Ile Gln Arg Pro Ala Asn Ala Il 20 25 30 Lys Glu Met Ile Glu Asn Cys Leu Asp Ala Lys Ser Thr Ser Ile Gl 35 40 45 Val Ile Val Lys Glu Gly Gly Leu Lys Leu Ile Gln Ile Gln Asp As 50 55 60 Gly Thr Gly Ile Arg Lys Glu Asp Leu Asp Ile Val Cys Glu Arg Ph 65 70 75 80 Thr Thr Ser Lys Leu Gln Ser Phe Glu Asp Leu Ala Ser Ile Ser Th 85 90 95 Tyr Gly Phe Arg Gly Glu Ala Leu Ala Ser Ile Ser His Val Ala Hi 100 105 110 Val Thr Ile Thr Thr Lys Thr Ala Asp Gly Lys Cys Ala Tyr Arg Al 115 120 125 Ser Tyr Ser Asp Gly Lys Leu Lys Ala Pro Pro Lys Pro Cys Ala Gl 130 135 140 Asn Gln Gly Thr Gln Ile Thr Val Glu Asp Leu Phe Tyr Asn Ile Al 145 150 155 160 Thr Arg Arg Lys Ala Leu Lys Asn Pro Ser Glu Glu Tyr Gly Lys Il 165 170 175 Leu Glu Val Val Gly Arg Tyr Ser Val His Asn Ala Gly Ile Ser Ph 180 185 190 Ser Val Lys Lys Gln Gly Glu Thr Val Ala Asp Val Arg Thr Leu Pr 195 200 205 Asn Ala Ser Thr Val Asp Asn Ile Arg Ser Ile Phe Gly Asn Ala Va 210 215 220 Ser Arg Glu Leu Ile Glu Ile Gly Cys Glu Asp Lys Thr Leu Ala Ph 225 230 235 240 Lys Met Asn Gly Tyr Ile Ser Asn Ala Asn Tyr Ser Val Lys Lys Cy 245 250 255 Ile Phe Leu Leu Phe Ile Asn His Arg Leu Val Glu Ser Thr Ser Le 260 265 270 Arg Lys Ala Ile Glu Thr Val Tyr Ala Ala Tyr Leu Pro Lys Asn Th 275 280 285 His Pro Phe Leu Tyr Leu Ser Leu Glu Ile Ser Pro Gln Asn Val As 290 295 300 Val Asn Val His Pro Thr Lys His Glu Val His Phe Leu His Glu Gl 305 310 315 320 Ser Ile Leu Glu Arg Val Gln Gln His Ile Glu Ser Lys Leu Leu Gl 325 330 335 Ser Asn Ser Ser Arg Met Tyr Phe Thr Gln Thr Leu Leu Pro Gly Le 340 345 350 Ala Gly Pro Ser Gly Glu Met Val Lys Ser Thr Thr Ser Leu Thr Se 355 360 365 Ser Ser Thr Ser Gly Ser Ser Asp Lys Val Tyr Ala His Gln Met Va 370 375 380 Arg Thr Asp Ser Arg Glu Gln Lys Leu Asp Ala Phe Leu Gln Pro Le 385 390 395 400 Ser Lys Pro Leu Ser Ser Gln Pro Gln Ala Ile Val Thr Glu Asp Ly 405 410 415 Thr Asp Ile Ser Ser Gly Arg Ala Arg Gln Gln Asp Glu Glu Met Le 420 425 430 Glu Leu Pro Ala Pro Ala Glu Val Ala Ala Lys Asn Gln Ser Leu Gl 435 440 445 Gly Asp Thr Thr Lys Gly Thr Ser Glu Met Ser Glu Lys Arg Gly Pr 450 455 460 Thr Ser Ser Asn Pro Arg Lys Arg His Arg Glu Asp Ser Asp Val Gl 465 470 475 480 Met Val Glu Asp Asp Ser Arg Lys Glu Met Thr Ala Ala Cys Thr Pr 485 490 495 Arg Arg Arg Ile Ile Asn Leu Thr Ser Val Leu Ser Leu Gln Glu Gl 500 505 510 Ile Asn Glu Gln Gly His Glu Val Leu Arg Glu Met Leu His Asn Hi 515 520 525 Ser Phe Val Gly Cys Val Asn Pro Gln Trp Ala Leu Ala Gln His Gl 530 535 540 Thr Lys Leu Tyr Leu Leu Asn Thr Thr Lys Leu Ser Glu Glu Leu Ph 545 550 555 560 Tyr Gln Ile Leu Ile Tyr Asp Phe Ala Asn Phe Gly Val Leu Arg Le 565 570 575 Ser Glu Pro Ala Pro Leu Phe Asp Leu Ala Met Leu Ala Leu Asp Se 580 585 590 Pro Glu Ser Gly Trp Thr Glu Glu Asp Gly Pro Lys Glu Gly Leu Al 595 600 605 Glu Tyr Ile Val Glu Phe Leu Lys Lys Lys Ala Glu Met Leu Ala As 610 615 620 Tyr Phe Ser Leu Glu Ile Asp Glu Glu Gly Asn Leu Ile Gly Leu Pr 625 630 635 640 Leu Leu Ile Asp Asn Tyr Val Pro Pro Leu Glu Gly Leu Pro Ile Ph 645 650 655 Ile Leu Arg Leu Ala Thr Glu Val Asn Trp Asp Glu Glu Lys Glu Cy 660 665 670 Phe Glu Ser Leu Ser Lys Glu Cys Ala Met Phe Tyr Ser Ile Arg Ly 675 680 685 Gln Tyr Ile Ser Glu Glu Ser Thr Leu Ser Gly Gln Gln Ser Glu Va 690 695 700 Pro Gly Ser Ile Pro Asn Ser Trp Lys Trp Thr Val Glu His Ile Va 705 710 715 720 Tyr Lys Ala Leu Arg Ser His Ile Leu Pro Pro Lys His Phe Thr Gl 725 730 735 Asp Gly Asn Ile Leu Gln Leu Ala Asn Leu Pro Asp Leu Tyr Lys Va 740 745 750 Phe Glu Arg Cys 755 397 base pairs nucleic acid single linear DNA (genomic) unknown 6 TGGCTGGATG CTAAGCTACA GCTGAAGGAA GAACGTGAGC ACGAGGCACT GAGGTGATTG 60 GCTGAAGGCA CTTCCGTTGA GCATCTAGAC GTTTCCTTGG CTCTTCTGGC GCCAAAATG 120 CGTTCGTGGC AGGGGTTATT CGGCGGCTGG ACGAGACAGT GGTGAACCGC ATCGCGGCG 180 GGGAAGTTAT CCAGCGGCCA GCTAATGCTA TCAAAGAGAT GATTGAGAAC TGGTACGGA 240 GGAGTCGAGC CGGGCTCACT TAAGGGCTAC GACTTAACGG GCCGCGTCAC TCAATGGCG 300 GGACACGCCT CTTTCCCCGG GCAGAGGCAT GTACAGCGCA TGCCCACAAC GGCGGAGGC 360 GCCGGGTTCC CTACGTGCCA TAAGCCTTCT CCTTTTC 397 393 base pairs nucleic acid single linear DNA (genomic) unknown 7 AAACACGTTA ATGAGGCACT ATTGTTTGTA TTTGGAGTTT GTTATCATTG CTTGGCTCAT 60 ATTAAAATAT GTACATTAGA GTAGTTGCAG ACTGATAAAT TATTTTCTGT TTGATTTGC 120 AGTTTAGATG CAAAATCCAC AAGTATTCAA GTGATTGTTA AAGAGGGAGG CCTGAAGTT 180 ATTCAGATCC AAGACAATGG CACCGGGATC AGGGTAAGTA AAACCTCAAA GTAGCAGGA 240 GTTTGTGCGC TTCATGGAAG AGTCAGGACC TTTCTCTGTT CTGGAAACTA GGCTTTTGC 300 GATGGGATTT TTTCACTGAA AAATTCAACA CCAACAATAA ATATTTATTG AGTACCTAT 360 ATTTGCGGGG CACTGTTCAG GGGATGTGTC AGT 393 352 base pairs nucleic acid single linear DNA (genomic) unknown 8 TTTCCTGGAT TAATCAAGAA ATGGAATTCA AAGAGATTTG GAAAATGAGT AACATGATTA 60 TTTACTCATC TTTTTGGTAT CTAACAGAAA GAAGATCTGG ATATTGTATG TGAAAGGTT 120 ACTACTAGTA AACTGCAGTC CTTTGAGGAT TTAGCCAGTA TTTCTACCTA TGGCTTTCG 180 GGTGAGGTAA GCTAAAGATT CAAGAAATGT GTAAAATATC CTCCTGTGAT GACATTGTC 240 GTCATTTGTT AGTATGTATT TCTCAACATA GATAAATAAG GTTTGGTACC TTTTACTTG 300 TAAATGTATG CAAATCTGAG CAAACTTAAT GAACTTTAAC TTTCAAAGAC TG 352 287 base pairs nucleic acid single linear DNA (genomic) unknown 9 TGGAAGCAGC AGCAGATAAC CTTTCCCTTT GGTGAGGTGA CAGTGGGTGA CCCAGCAGTG 60 AGTTTTTCTT TCAGTCTATT TTCTTTTCTT CCTTAGGCTT TGGCCAGCAT AAGCCATGT 120 GCTCATGTTA CTATTACAAC GAAAACAGCT GATGGAAAGT GTGCATACAG GTATAGTGC 180 GACTTCTTTT ACTCATATAT ATTCATTCTG AAATGTATTT TGGGCCTAGG TCTCAGAGT 240 ATCCTGTCTC AACACCAGTG TTATCTTTGG CAGAGATCTT GAGTACG 287 336 base pairs nucleic acid single linear DNA (genomic) unknown 10 TTGATATGAT TTTCTCTTTT CCCCTTGGGA TTAGTATCTA TCTCTCTACT GGATATTAAT 60 TTGTTATATT TTCTCATTAG AGCAAGTTAC TCAGATGGAA AACTGAAAGC CCCTCCTAA 120 CCATGTGCTG GCAATCAAGG GACCCAGATC ACGGTAAGAA TGGTACATGG GAGAGTAAA 180 TGTTGAAGCT TTGTTTGTAT AAATATTGGA ATAAAAAATA AAATTGCTTC TAAGTTTTC 240 GGGTAATAAT AAAATGAATT TGCACTAGTT AATGGAGGTC CCAAGATATC CTCTAAGCA 300 GATAAATGAC TATTGGCTTT TTGGCATGGC AGCCTG 336 275 base pairs nucleic acid single linear DNA (genomic) unknown 11 GCTTTTGCCA GGACCATCTT GGGTTTTATT TTCAAGTACT TCTATGAATT TACAAGAAAA 60 ATCAATCTTC TGTTCAGGTG GAGGACCTTT TTTACAACAT AGCCACGAGG AGAAAAGCT 120 TAAAAAATCC AAGTGAAGAA TATGGGAAAA TTTTGGAAGT TGTTGGCAGG TACAGTCCA 180 AATCTGGGAG TGGGTCTCTG AGATTTGTCA TCAAAGTAAT GTGTTCTAGT GCTCATACA 240 TGAACAGTTG CTGAGCTAGA TGGTGAAAAG TAAAA 275 389 base pairs nucleic acid single linear DNA (genomic) unknown 12 CAGCAACCTA TAAAAGTAGA GAGGAGTCTG TGTTTTGACG CAGCACCTTT AGCATTTTTA 60 TTTGGATGAA GTTTCTGCTG GTTTATTTTT CTGTGGGTAA AATATTAATA GGCTGTATG 120 AGATATTTTT CTTTATATGT ACCTTTGTTT AGATTACTCA ACTCCACTAA TTTATTTAA 180 TAAAAGGGGG CTCTGACATC TAGTGTGTGT TTTTGGCAAC TCTTTTCTTA CTCTTTTGT 240 TTTCTTTTCC AGGTATTCAG TACACAATGC AGGCATTAGT TTCTCAGTTA AAAAAGTAA 300 TTCTTGGTTT ATGGGGGATG GTTTTGTTTT ATGAAAAGAA AAAAGGGGAT TTTTAATAG 360 TTGCTGGTGG AGATAAGGTT ATGATGTTT 389 381 base pairs nucleic acid single linear DNA (genomic) unknown 13 ATGTTTCAGT CTCAGCCATG AGACAATAAA TCCTTGTGTC TTCTGCTGTT TGTTTATCAG 60 CAAGGAGAGA CAGTAGCTGA TGTTAGGACA CTACCCAATG CCTCAACCGT GGACAATAT 120 CGCTCCATCT TTGGAAATGC TGTTAGTCGG TATGTCGATA ACCTATATAA AAAAATCTT 180 TACATTTATT ATCTTGGTTT ATCATTCCAT CACATTATTT GGGAACCTTT CAAGATATT 240 TGTGTGTTAA GAGTTTGCTT TAGTCAAATA CACAGGCTTG TTTTATGCTT CAGATTTGT 300 AATGGAGTTC TTATTTCACG TAATCAACAC TTTCTAGGTG TATGTAATCT CCTAGATTC 360 GTGGCGTGAA TCATGTGTTC T 381 526 base pairs nucleic acid single linear DNA (genomic) unknown 14 ACTGAGTAGG GTAGGTGGGT GAGTGGGTGG GTGGGTGGGT GGGTGGATGG ATGGATGGGA 60 GGATGGGTGG GTGAATGGGT GAACAGACAA ATGGATGGAT GAATGGACAG GCACAGGAG 120 ACCTCAAATG GACCAAGTCT TCGGGGCCCT CATTTCACAA AGTTAGTTTA TGGGAAGGA 180 CCTTGTGTTT TTAAATTCTG ATTCTTTTGT AATGTTTGAG TTTTGAGTAT TTTCAAAAG 240 TTCAGAATCT CTTTTCTAAT AGAGAACTGA TAGAAATTGG ATGTGAGGAT AAAACCCTA 300 CCTTCAAAAT GAATGGTTAC ATATCCAATG CAAACTACTC AGTGAAGAAG TGCATCTTC 360 TACTCTTCAT CAACCGTAAG TTAAAAAGAA CCACATGGGA AATCCACTCA CAGGAAACA 420 CCACAGGGAA TTTTATGGGA CCATGGAAAA ATTTCTGAGT CCATAGGTTT GATTAAACA 480 GGAGAAACCT CATGGCAAAG TTTGGTTTTA TTGGGAAGCA TGTATA 526 434 base pairs nucleic acid single linear DNA (genomic) unknown 15 ATAGTGGGCT GGAAAGTGGC CACAGGTAAA GGTGCACCTT TCTTCCTGGG GATGTGATGT 60 GCATATCACT ACAGAAATGT CTTTCCTGAG GTGATGTCAT GACTTTGTGT GAATGTACA 120 CTGTGACCTC ACCCCTCAGG ACAGTTTTGA ACTGGTTGCT TTCTTTTTAT TGTTTAGAT 180 GTCTGGTAGA ATCAACTTCC TTGAGAAAAG CCATAGAAAC AGTGTATGCA GCCTATTTG 240 CCAAAAACAC ACACCCATTC CTGTACCTCA GGTAATGTAG CACCAAACTC CTCAACCAA 300 ACTCACAAGG AACAGATGTT CTATCAGGCT CTCCTCTTTG AAAGAGATGA GCATGCTAA 360 AGTACAATCA GAGTGAATCC CATACACCAC TGGCAAAAGG ATGTTCTGTC CCTTCTTAC 420 GGTACAAGGC ACAG 434 458 base pairs nucleic acid single linear DNA (genomic) unknown 16 CTTACGCAAA GCTACACAGC TCTTAAGTAG CAGTGCCAAT ATTTGAACAC ACTCAGACTC 60 GAGCCTGAGG TTTTGACCAC TGTGTCATCT GGCCTCAAAT CTTCTGGCCA CCACATACA 120 CATATGTGGG CTTTTTCTCC CCCTCCCACT ATCTAAGGTA ATTGTTCTCT CTTATTTTC 180 TGACAGTTTA GAAATCAGTC CCCAGAATGT GGATGTTAAT GTGCACCCCA CAAAGCATG 240 AGTTCACTTC CTGCACGAGG AGAGCATCCT GGAGCGGGTG CAGCAGCACA TCGAGAGCA 300 GCTCCTGGGC TCCAATTCCT CCAGGATGTA CTTCACCCAG GTCAGGGCGC TTCTCATCC 360 GCTACTTCTC TGGGGCCTTT GAAATGTGCC CGGCCAGACG TGAGAGCCCA GATTTTTGC 420 GTTATTTAGG AACTTTTTTT GAAGTATTAC CTGGATAG 458 618 base pairs nucleic acid single linear DNA (genomic) unknown 17 GATAATTATA CCTCATACTA GCTTCTTTCT TAGTACTGCT CCATTTGGGG ACCTGTATAT 60 CTATACTTCT TATTCTGAGT CTCTCCACTA TATATATATA TATATATATA TTTTTTTTT 120 TTTTTTTTTT TAATACAGAC TTTGCTACCA GGACTTGCTG GCCCCTCTGG GGAGATGGT 180 AAATCCACAA CAAGTCTGAC CTCGTCTTCT ACTTCTGGAA GTAGTGATAA GGTCTATGC 240 CACCAGATGG TTCGTACAGA TTCCCGGGAA CAGAAGCTTG ATGCATTTCT GCAGCCTCT 300 AGCAAACCCC TGTCCAGTCA GCCCCAGGCC ATTGTCACAG AGGATAAGAC AGATATTTC 360 AGTGGCAGGG CTAGGCAGCA AGATGAGGAG ATGCTTGAAC TCCCAGCCCC TGCTGAAGT 420 GCTGCCAAAA ATCAGAGCTT GGAGGGGGAT ACAACAAAGG GGACTTCAGA AATGTCAGA 480 AAGAGAGGAC CTACTTCCAG CAACCCCAGG TATGGCCTTT TGGGAAAAGT ACAGCCTAC 540 TCCTTTATTC TGTAATAAAA CTGCCTTCTA ACTTTGGCTT TTCATGAATC ACTTGCATC 600 TCTCTCTGCC GACTTCCC 618 478 base pairs nucleic acid single linear DNA (genomic) unknown 18 CTGTGCTCCA GCACAGGTCA TCCAGCTCTG TAGACCAGCG CAGAGAAGTT GCTTGCTCCC 60 AAATGCAACC CACAAAATTT GGCTAAGTTT AAAAACAAGA ATAATAATGA TCTGCACTT 120 CTTTTCTTCA TTGCAGAAAG AGACATCGGG AAGATTCTGA TGTGGAAATG GTGGAAGAT 180 ATTCCCGAAA GGAAATGACT GCAGCTTGTA CCCCCCGGAG AAGGATCATT AACCTCACT 240 GTGTTTTGAG TCTCCAGGAA GAAATTAATG AGCAGGGACA TGAGGGTACG TAAACGCTG 300 GGCCTGCCTG GGATGCATAG GGCCTCAACT GCCAAGGTTT TGGAAATGGA GAAAGCAGT 360 ATGTTGTCAG AGTGGCACTA CAGTTTTGAT GGGCAAGCTC CTCTTCCTTT ACTAACCCA 420 AATAGCATCA GCTTAAAGAC AATTTTTGAT TGGGAGAAAA GGGAGAAAAT AATCTCTG 478 377 base pairs nucleic acid single linear unknown 19 CAGTTTTCAC CAGGAGGCTC AAATCAGGCC TTTGCTTACT TGGTGTCTCT AGTTCTGGTG 60 CCTGGTGCTT TGGTCAATGA AGTGGGGTTG GTAGGATTCT ATTACTTACC TGTTTTTTG 120 TTTTATTTTT TGTTTTGCAG TTCTCCGGGA GATGTTGCAT AACCACTCCT TCGTGGGCT 180 TGTGAATCCT CAGTGGGCCT TGGCACAGCA TCAAACCAAG TTATACCTTC TCAACACCA 240 CAAGCTTAGG TAAATCAGCT GAGTGTGTGA ACAAGCAGAG CTACTACAAC AATGGTCCA 300 GGAGCACAGG CACAAAAGCT AAGGAGAGCA GCATGAAGGT AGTTGGGAAG GGCACAGGC 360 TTGGAGTCAG CACATGT 377 325 base pairs nucleic acid single linear DNA (genomic) unknown 20 CCCCTGGTTG AAGCGTTGGA ATCCCACTCT TTGGAAGATT GTGTTAGACT GTTAACCAGA 60 TTCCACAGCC AGGCAGAACT ATGTCTGTCT CATCCATGTG TCAGGGATTA CGTCTCCCA 120 TTGTCCCAAC TGGTTGTATC TCAAGCATGA ATTCAGCTTT TCCTTAAAGT CACTTCATT 180 TTATTTTCAG TGAAGAACTG TTCTACCAGA TACTCATTTA TGATTTTGCC AATTTTGGT 240 TTCTCAGGTT ATCGGTAAGT TTAGATCCTT TTCACTTCTG ACATTTCAAC TGACCGCCC 300 GCAAACAGTA GCTCTCCACT AAATA 325 341 base pairs nucleic acid single linear DNA (genomic) unknown 21 CATTTATGGT TTCTCACCTG CCATTCTGAT AGTGGATTCT TGGGAATTCA GGCTTCATTT 60 GGATGCTCCG TTAAAGCTTG CTCCTTCATG TTCTTGCTTC TTCCTAGGAG CCAGCACCG 120 TCTTTGACCT TGCCATGCTT GCCTTAGATA GTCCAGAGAG TGGCTGGACA GAGGAAGAT 180 GTCCCAAAGA AGGACTTGCT GAATACATTG TTGAGTTTCT GAAGAAGAAG GCTGAGATG 240 TTGCAGACTA TTTCTCTTTG GAAATTGATG AGGTGTGACA GCCATTCTTA TACTTCTGT 300 GTATTCTCCA AATAAAATTT CCAGCCGGGT GCATTGGCTC A 341 260 base pairs nucleic acid single linear DNA (genomic) unknown 22 CAGATAGGAG GCACAAGGCC TGGGAAAGGC ACTGGAGAAA TGGGATTTGT TTAAACTATG 60 ACAGCATTAT TTCTTGTTCC CTTGTCCTTT TTCCTGCAAG CAGGAAGGGA ACCTGATTG 120 ATTACCCCTT CTGATTGACA ACTATGTGCC CCCTTTGGAG GGACTGCCTA TCTTCATTC 180 TCGACTAGCC ACTGAGGTCA GTGATCAAGC AGATACTAAG CATTTCGGTA CATGCATGT 240 TGCTGGAGGG AAAGGGCAAA 260 340 base pairs nucleic acid single linear DNA (genomic) unknown 23 CTATATCTTC CCAGCAATAT TCACAGTCCG TTTACAGTTT TAACGCCTAA AGTATCACAT 60 TTCGTTTTTT AGCTTTAAGT AGTCTGTGAT CTCCGTTTAG AATGAGAATG TTTAAATTC 120 TACCTATTTT GAGGTATTGA ATTTCTTTGG ACCAGGTGAA TTGGGACGAA GAAAAGGAA 180 GTTTTGAAAG CCTCAGTAAA GAATGCGCTA TGTTCTATTC CATCCGGAAG CAGTACATA 240 CTGAGGAGTC GACCCTCTCA GGCCAGCAGG TACAGTGGTG ATGCACACTG GCACCCCAG 300 ACTAGGACAG GACCTCATAC ATCTTAGGAG ATGAAACTTG 340 563 base pairs nucleic acid single linear DNA (genomic) unknown 24 AATCCTCTTG TGTTCAGGCC TGTGGATCCC TGAGAGGCTA GCCCACAAGA TCCACTTCAA 60 AAGCCCTAGA TAACACCAAG TCTTTCCAGA CCCAGTGCAC ATCCCATCAG CCAGGACAC 120 AGTGTATGTT GGGATGCAAA CAGGGAGGCT TATGACATCT AATGTGTTTT CCAGAGTGA 180 GTGCCTGGCT CCATTCCAAA CTCCTGGAAG TGGACTGTGG AACACATTGT CTATAAAGC 240 TTGCGCTCAC ACATTCTGCC TCCTAAACAT TTCACAGAAG ATGGAAATAT CCTGCAGCT 300 GCTAACCTGC CTGATCTATA CAAAGTCTTT GAGAGGTGTT AAATATGGTT ATTTATGCA 360 TGTGGGATGT GTTCTTCTTT CTCTGTATTC CGATACAAAG TGTTGTATCA AAGTGTGAT 420 TACAAAGTGT ACCAACATAA GTGTTGGTAG CACTTAAGAC TTATACTTGC CTTCTGATA 480 TATTCCTTTA TACACAGTGG ATTGATTATA AATAAATAGA TGTGTCTTAA CATAATTTC 540 TATTTAATTT TATTATGTAT ATA 563 137 base pairs nucleic acid single linear cDNA unknown 25 CTTGGCTCTT CTGGCGCCAA AATGTCGTTC GTGGCAGGGG TTATTCGGCG GCTGGACGAG 60 ACAGTGGTGA ACCGCATCGC GGCGGGGGAA GTTATCCAGC GGCCAGCTAA TGCTATCAA 120 GAGATGATTG AGAACTG 137 91 base pairs nucleic acid single linear cDNA unknown 26 TTTAGATGCA AAATCCACAA GTATTCAAGT GATTGTTAAA GAGGGAGGCC TGAAGTTGAT 60 TCAGATCCAA GACAATGGCA CCGGGATCAG G 91 99 base pairs nucleic acid single linear cDNA unknown 27 AAAGAAGATC TGGATATTGT ATGTGAAAGG TTCACTACTA GTAAACTGCA GTCCTTTGAG 60 GATTTAGCCA GTATTTCTAC CTATGGCTTT CGAGGTGAG 99 74 base pairs nucleic acid single linear cDNA unknown 28 GCTTTGGCCA GCATAAGCCA TGTGGCTCAT GTTACTATTA CAACGAAAAC AGCTGATGGA 60 AAGTGTGCAT ACAG 74 73 base pairs nucleic acid single linear cDNA unknown 29 AGCAAGTTAC TCAGATGGAA AACTGAAAGC CCCTCCTAAA CCATGTGCTG GCAATCAAGG 60 GACCCAGATC ACG 73 92 base pairs nucleic acid single linear cDNA unknown 30 GTGGAGGACC TTTTTTACAA CATAGCCACG AGGAGAAAAG CTTTAAAAAA TCCAAGTGAA 60 GAATATGGGA AAATTTTGGA AGTTGTTGGC AG 92 43 base pairs nucleic acid single linear cDNA unknown 31 GTATTCAGTA CACAATGCAG GCATTAGTTT CTCAGTTAAA AAA 43 89 base pairs nucleic acid single linear cDNA unknown 32 CAAGGAGAGA CAGTAGCTGA TGTTAGGACA CTACCCAATG CCTCAACCGT GGACAATATT 60 CGCTCCATCT TTGGAAATGC TGTTAGTCG 89 113 base pairs nucleic acid single linear cDNA unknown 33 AGAACTGATA GAAATTGGAT GTGAGGATAA AACCCTAGCC TTCAAAATGA ATGGTTACAT 60 ATCCAATGCA AACTACTCAG TGAAGAAGTG CATCTTCTTA CTCTTCATCA ACC 113 94 base pairs nucleic acid single linear cDNA unknown 34 ATCGTCTGGT AGAATCAACT TCCTTGAGAA AAGCCATAGA AACAGTGTAT GCAGCCTATT 60 TGCCCAAAAA CACACACCCA TTCCTGTACC TCAG 94 154 base pairs nucleic acid single linear cDNA unknown 35 TTTAGAAATC AGTCCCCAGA ATGTGGATGT TAATGTGCAC CCCACAAAGC ATGAAGTTCA 60 CTTCCTGCAC GAGGAGAGCA TCCTGGAGCG GGTGCAGCAG CACATCGAGA GCAAGCTCC 120 GGGCTCCAAT TCCTCCAGGA TGTACTTCAC CCAG 154 371 base pairs nucleic acid single linear cDNA unknown 36 ACTTTGCTAC CAGGACTTGC TGGCCCCTCT GGGGAGATGG TTAAATCCAC AACAAGTCTG 60 ACCTCGTCTT CTACTTCTGG AAGTAGTGAT AAGGTCTATG CCCACCAGAT GGTTCGTAC 120 GATTCCCGGG AACAGAAGCT TGATGCATTT CTGCAGCCTC TGAGCAAACC CCTGTCCAG 180 CAGCCCCAGG CCATTGTCAC AGAGGATAAG ACAGATATTT CTAGTGGCAG GGCTAGGCA 240 CAAGATGAGG AGATGCTTGA ACTCCCAGCC CCTGCTGAAG TGGCTGCCAA AAATCAGAG 300 TTGGAGGGGG ATACAACAAA GGGGACTTCA GAAATGTCAG AGAAGAGAGG ACCTACTTC 360 AGCAACCCCA G 371 149 base pairs nucleic acid single linear cDNA unknown 37 AAAGAGACAT CGGGAAGATT CTGATGTGGA AATGGTGGAA GATGATTCCC GAAAGGAAAT 60 GACTGCAGCT TGTACCCCCC GGAGAAGGAT CATTAACCTC ACTAGTGTTT TGAGTCTCC 120 GGAAGAAATT AATGAGCAGG GACATGAGG 149 109 base pairs nucleic acid single linear cDNA unknown 38 TTCTCCGGGA GATGTTGCAT AACCACTCCT TCGTGGGCTG TGTGAATCCT CAGTGGGCCT 60 TGGCACAGCA TCAAACCAAG TTATACCTTC TCAACACCAC CAAGCTTAG 109 64 base pairs nucleic acid single linear cDNA unknown 39 TGAAGAACTG TTCTACCAGA TACTCATTTA TGATTTTGCC AATTTTGGTG TTCTCAGGTT 60 ATCG 64 165 base pairs nucleic acid single linear cDNA unknown 40 GAGCCAGCAC CGCTCTTTGA CCTTGCCATG CTTGCCTTAG ATAGTCCAGA GAGTGGCTGG 60 ACAGAGGAAG ATGGTCCCAA AGAAGGACTT GCTGAATACA TTGTTGAGTT TCTGAAGAA 120 AAGGCTGAGA TGCTTGCAGA CTATTTCTCT TTGGAAATTG ATGAG 165 93 base pairs nucleic acid single linear cDNA unknown 41 GAAGGGAACC TGATTGGATT ACCCCTTCTG ATTGACAACT ATGTGCCCCC TTTGGAGGGA 60 CTGCCTATCT TCATTCTTCG ACTAGCCACT GAG 93 114 base pairs nucleic acid single linear cDNA unknown 42 GTGAATTGGG ACGAAGAAAA GGAATGTTTT GAAAGCCTCA GTAAAGAATG CGCTATGTTC 60 TATTCCATCC GGAAGCAGTA CATATCTGAG GAGTCGACCC TCTCAGGCCA GCAG 114 360 base pairs nucleic acid single linear cDNA unknown 43 AGTGAAGTGC CTGGCTCCAT TCCAAACTCC TGGAAGTGGA CTGTGGAACA CATTGTCTAT 60 AAAGCCTTGC GCTCACACAT TCTGCCTCCT AAACATTTCA CAGAAGATGG AAATATCCT 120 CAGCTTGCTA ACCTGCCTGA TCTATACAAA GTCTTTGAGA GGTGTTAAAT ATGGTTATT 180 ATGCACTGTG GGATGTGTTC TTCTTTCTCT GTATTCCGAT ACAAAGTGTT GTATCAAAG 240 GTGATATACA AAGTGTACCA ACATAAGTGT TGGTAGCACT TAAGACTTAT ACTTGCCTT 300 TGATAGTATT CCTTTATACA CAGTGGATTG ATTATAAATA AATAGATGTG TCTTAACAT 360 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 44 AGGCACTGAG GTGATTGGC 19 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 45 TCGTAGCCCT TAAGTGAGC 19 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 46 AATATGTACA TTAGAGTAGT TG 22 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 47 CAGAGAAAGG TCCTGACTC 19 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 48 AGAGATTTGG AAAATGAGTA AC 22 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 49 ACAATGTCAT CACAGGAGG 19 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 50 AACCTTTCCC TTTGGTGAGG 20 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 51 GATTACTCTG AGACCTAGGC 20 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 52 GATTTTCTCT TTTCCCCTTG GG 22 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 53 CAAACAAAGC TTCAACAATT TAC 23 26 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 54 GGGTTTTATT TTCAAGTACT TCTATG 26 26 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 55 GCTCAGCAAC TGTTCAATGT ATGAGC 26 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 56 CTAGTGTGTG TTTTTGGC 18 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 57 CATAACCTTA TCTCCACC 18 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 58 CTCAGCCATG AGACAATAAA TCC 23 21 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic DNA” 59 GGTTCCCAAA TAATGTGATG G 21 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 60 CAAAAGCTTC AGAATCTC 18 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 61 CTGTGGGTGT TTCCTGTGAG TGG 23 24 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 62 CATGACTTTG TGTGAATGTA CACC 24 24 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 63 GAGGAGAGCC TGATAGAACA TCTG 24 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 64 GGGCTTTTTC TCCCCCTCCC 20 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 65 AAAATCTGGG CTCTCACG 18 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 66 AATTATACCT CATACTAGC 19 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 67 GTTTTATTAC AGAATAAAGG AGG 23 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 68 AAGCCAAAGT TAGAAGGCA 19 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 69 TGCAACCCAC AAAATTTGGC 20 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 70 CTTTCTCCAT TTCCAAAACC 20 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 71 TGGTGTCTCT AGTTCTGG 18 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 72 CATTGTTGTA GTAGCTCTGC 20 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 73 CCCATTTGTC CCAACTGG 18 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 74 CGGTCAGTTG AAATGTCAG 19 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 75 CATTTGGATG CTCCGTTAAA GC 22 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 76 CACCCGGCTG GAAATTTTAT TTG 23 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 77 GGAAAGGCAC TGGAGAAATG GG 22 25 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 78 CCCTCCAGCA CACATGCATG TACCG 25 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 79 TAAGTAGTCT GTGATCTCCG 20 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 80 ATGTATGAGG TCCTGTCC 18 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 81 GACACCAGTG TATGTTGG 18 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 82 GAGAAAGAAG AACACATCCC 20 38 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 83 TGTAAAACGA CGGCCAGTCA CTGAGGTGAT TGGCTGAA 38 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 84 TAGCCCTTAA GTGAGCCCG 19 38 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 85 TGTAAAACGA CGGCCAGTTA CATTAGAGTA GTTGCAGA 38 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 86 AGGTCCTGAC TCTTCCATG 19 40 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 87 TGTAAAACGA CGGCCAGTTT GGAAAATGAG TAACATGATT 40 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 88 TGTCATCACA GGAGGATAT 19 38 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 89 TGTAAAACGA CGGCCAGTCT TTCCCTTTGG TGAGGTGA 38 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 90 TACTCTGAGA CCTAGGCCCA 20 40 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 91 TGTAAAACGA CGGCCAGTTC TCTTTTCCCC TTGGGATTAG 40 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 92 ACAAAGCTTC AACAATTTAC TCT 23 46 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 93 TGTAAAACGA CGGCCAGTGT TTTATTTTCA AGTACTTCTA TGAATT 46 26 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 94 CAGCAACTGT TCAATGTATG AGCACT 26 36 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 95 TGTAAAACGA CGGCCAGTGT GTGTGTTTTT GGCAAC 36 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 96 AACCTTATCT CCACCAGC 18 41 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 97 TGTAAAACGA CGGCCAGTAG CCATGAGACA ATAAATCCTT G 41 22 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 98 TCCCAAATAA TGTGATGGAA TG 22 37 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 99 TGTAAAACGA CGGCCAGTAA GCTTCAGAAT CTCTTTT 37 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 100 TGGGTGTTTC CTGTGAGTGG ATT 23 42 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 101 TGTAAAACGA CGGCCAGTAC TTTGTGTGAA TGTACACCTG TG 42 24 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 102 GAGAGCCTGA TAGAACATCT GTTG 24 39 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 103 TGTAAAACGA CGGCCAGTCT TTTTCTCCCC CTCCCACTA 39 17 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 104 TCTGGGCTCT CACGTCT 17 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 105 CTTATTCTGA GTCTCTCC 18 35 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 106 TGTAAAACGA CGGCCAGTGT TTGCTCAGAG GCTGC 35 21 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 107 GATGGTTCGT ACAGATTCCC G 21 41 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 108 TGTAAAACGA CGGCCAGTTT ATTACAGAAT AAAGGAGGTA G 41 39 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 109 TGTAAAACGA CGGCCAGTAA CCCACAAAAT TTGGCTAAG 39 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 110 TCTCCATTTC CAAAACCTTG 20 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 111 TGTCTCTAGT TCTGGTGC 18 38 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 112 TGTAAAACGA CGGCCAGTTG TTGTAGTAGC TCTGCTTG 38 20 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 113 ATTTGTCCCA ACTGGTTGTA 20 39 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 114 TGTAAAACGA CGGCCAGTTC AGTTGAAATG TCAGAAGTG 39 18 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 115 TGTAAAACGA CGGCCAGT 18 23 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 116 CCGGCTGGAA ATTTTATTTG GAG 23 41 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 117 TGTAAAACGA CGGCCAGTAG GCACTGGAGA AATGGGATTT G 41 26 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 118 TCCAGCACAC ATGCATGTAC CGAAAT 26 20 base pairs nucleic acid single linear unknown misc_feature /note= “primer directed to genomic intron DNA” 119 GTAGTCTGTG ATCTCCGTTT 20 36 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 120 TGTAAAACGA CGGCCAGTTA TGAGGTCCTG TCCTAG 36 19 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 121 ACCAGTGTAT GTTGGGATG 19 39 base pairs nucleic acid single linear unknown misc_feature /note= “primers directed to genomic intron DNA” 122 TGTAAAACGA CGGCCAGTGA AAGAAGAACA CATCCCACA 39 770 amino acids amino acid single linear protein unknown 123 Met Ser Leu Arg Ile Lys Ala Leu Asp Ala Ser Val Val Asn Lys Il 1 5 10 15 Ala Ala Gly Glu Ile Ile Ile Ser Pro Val Asn Ala Leu Lys Glu Me 20 25 30 Met Glu Asn Ser Ile Asp Ala Asn Ala Thr Met Ile Asp Ile Leu Va 35 40 45 Lys Glu Gly Gly Ile Lys Val Leu Gln Ile Thr Asp Asn Gly Ser Gl 50 55 60 Ile Asn Lys Ala Asp Leu Pro Ile Leu Cys Glu Arg Phe Thr Thr Se 65 70 75 80 Lys Leu Gln Lys Phe Glu Asp Leu Ser Gln Ile Gln Thr Tyr Gly Ph 85 90 95 Arg Gly Glu Ala Leu Ala Ser Ile Ser His Val Ala Arg Val Thr Va 100 105 110 Thr Thr Lys Val Lys Glu Asp Arg Cys Ala Trp Arg Val Ser Tyr Al 115 120 125 Glu Gly Lys Met Leu Glu Ser Pro Lys Pro Val Ala Gly Lys Asp Gl 130 135 140 Thr Thr Ile Leu Val Glu Asp Leu Phe Phe Asn Ile Pro Ser Arg Le 145 150 155 160 Arg Ala Leu Arg Ser His Asn Asp Glu Tyr Ser Lys Ile Leu Asp Va 165 170 175 Val Gly Arg Tyr Ala Ile His Ser Lys Asp Ile Gly Phe Ser Cys Ly 180 185 190 Lys Phe Gly Asp Ser Asn Tyr Ser Leu Ser Val Lys Pro Ser Tyr Th 195 200 205 Val Gln Asp Arg Ile Arg Thr Val Phe Asn Lys Ser Val Ala Ser As 210 215 220 Leu Ile Thr Phe His Ile Ser Lys Val Glu Asp Leu Asn Leu Glu Se 225 230 235 240 Val Asp Gly Lys Val Cys Asn Leu Asn Phe Ile Ser Lys Lys Ser Il 245 250 255 Ser Leu Ile Phe Phe Ile Asn Asn Arg Leu Val Thr Cys Asp Leu Le 260 265 270 Arg Arg Ala Leu Asn Ser Val Tyr Ser Asn Tyr Leu Pro Lys Gly Ph 275 280 285 Arg Pro Phe Ile Tyr Leu Gly Ile Val Ile Asp Pro Ala Ala Val As 290 295 300 Val Asn Val His Pro Thr Lys Arg Glu Val Arg Phe Leu Ser Gln As 305 310 315 320 Glu Ile Ile Glu Lys Ile Ala Asn Gln Leu His Ala Glu Leu Ser Al 325 330 335 Ile Asp Thr Ser Arg Thr Phe Lys Ala Ser Ser Ile Ser Thr Asn Ly 340 345 350 Pro Glu Ser Leu Ile Pro Phe Asn Asp Thr Ile Glu Ser Asp Arg As 355 360 365 Arg Lys Ser Leu Arg Gln Ala Gln Val Val Glu Asn Ser Tyr Thr Th 370 375 380 Ala Asn Ser Gln Leu Arg Lys Ala Lys Arg Gln Glu Asn Lys Leu Va 385 390 395 400 Arg Ile Asp Ala Ser Gln Ala Lys Ile Thr Ser Phe Leu Ser Ser Se 405 410 415 Gln Gln Phe Asn Phe Glu Gly Ser Ser Thr Lys Arg Gln Leu Ser Gl 420 425 430 Pro Lys Val Thr Asn Val Ser His Ser Gln Glu Ala Glu Lys Leu Th 435 440 445 Leu Asn Glu Ser Glu Gln Pro Arg Asp Ala Asn Thr Ile Asn Asp As 450 455 460 Asp Leu Lys Asp Gln Pro Lys Lys Lys Gln Lys Gln Leu Gly Asp Ty 465 470 475 480 Lys Val Pro Ser Ile Ala Asp Asp Glu Lys Asn Ala Leu Pro Ile Se 485 490 495 Lys Asp Gly Tyr Ile Arg Val Pro Lys Glu Arg Val Asn Val Asn Le 500 505 510 Thr Ser Ile Lys Lys Leu Arg Glu Lys Val Asp Asp Ser Ile His Ar 515 520 525 Glu Leu Thr Asp Ile Phe Ala Asn Leu Asn Tyr Val Gly Val Val As 530 535 540 Glu Glu Arg Arg Leu Ala Ala Ile Gln His Asp Leu Lys Leu Phe Le 545 550 555 560 Ile Asp Tyr Gly Ser Val Cys Tyr Glu Leu Phe Tyr Gln Ile Gly Le 565 570 575 Thr Asp Phe Ala Asn Phe Gly Lys Ile Asn Leu Gln Ser Thr Asn Va 580 585 590 Ser Asp Asp Ile Val Leu Tyr Asn Leu Leu Ser Glu Phe Asp Glu Le 595 600 605 Asn Asp Asp Ala Ser Lys Glu Lys Ile Ile Ser Lys Ile Trp Asp Me 610 615 620 Ser Ser Met Leu Asn Glu Tyr Tyr Ser Ile Glu Leu Val Asn Asp Gl 625 630 635 640 Leu Asp Asn Asp Leu Lys Ser Val Lys Leu Lys Ser Leu Pro Leu Le 645 650 655 Leu Lys Gly Tyr Ile Pro Ser Leu Val Lys Leu Pro Phe Phe Ile Ty 660 665 670 Arg Leu Gly Lys Glu Val Asp Trp Glu Asp Glu Gln Glu Cys Leu As 675 680 685 Gly Ile Leu Arg Glu Ile Ala Leu Leu Tyr Ile Pro Asp Met Val Pr 690 695 700 Lys Val Asp Thr Leu Asp Ala Ser Leu Ser Glu Asp Glu Lys Ala Gl 705 710 715 720 Phe Ile Asn Arg Lys Glu His Ile Ser Ser Leu Leu Glu His Val Le 725 730 735 Phe Pro Cys Ile Lys Arg Arg Phe Leu Ala Pro Arg His Ile Leu Ly 740 745 750 Asp Val Val Glu Ile Ala Asn Leu Pro Asp Leu Tyr Lys Val Phe Gl 755 760 765 Arg Cys 770 64 amino acids amino acid single linear protein unknown 124 Val Asn Arg Ile Ala Ala Gly Glu Val Ile Gln Arg Pro Ala Asn Al 1 5 10 15 Ile Lys Glu Met Ile Glu Asn Cys Leu Asp Ala Lys Phe Thr Ser Il 20 25 30 Gln Val Ile Val Lys Glu Gly Gly Leu Lys Leu Ile Gln Ile Gln As 35 40 45 Asn Gly Thr Gly Ile Arg Lys Glu Asp Leu Asp Ile Val Cys Glu Ar 50 55 60 64 amino acids amino acid single linear protein unknown 125 Val Asn Arg Ile Ala Ala Gly Glu Val Ile Gln Arg Pro Ala Asn Al 1 5 10 15 Ile Lys Glu Met Ile Glu Asn Cys Leu Asp Ala Lys Ser Thr Ser Il 20 25 30 Gln Val Ile Val Lys Glu Gly Gly Leu Lys Leu Ile Gln Ile Gln As 35 40 45 Asn Gly Thr Gly Ile Arg Lys Glu Asp Leu Asp Ile Val Cys Glu Ar 50 55 60 52 amino acids amino acid single linear protein unknown 126 Pro Ala Asn Ala Ile Lys Glu Met Ile Glu Asn Cys Leu Asp Ala Ly 1 5 10 15 Ser Thr Asn Ile Gln Val Val Val Lys Glu Gly Gly Leu Lys Leu Il 20 25 30 Gln Ile Gln Asp Asn Gly Thr Gly Ile Arg Lys Glu Asp Leu Asp Il 35 40 45 Val Cys Glu Arg 50 64 amino acids amino acid single linear protein unknown 127 Val Asn Lys Ile Ala Ala Gly Glu Ile Ile Ile Ser Pro Val Asn Al 1 5 10 15 Leu Lys Glu Met Met Glu Asn Ser Ile Asp Ala Asn Ala Thr Met Il 20 25 30 Asp Ile Leu Val Lys Glu Gly Gly Ile Lys Val Leu Gln Ile Thr As 35 40 45 Asn Gly Ser Gly Ile Asn Lys Ala Asp Leu Pro Ile Leu Cys Glu Ar 50 55 60 64 amino acids amino acid single linear protein unknown 128 Val His Arg Ile Thr Ser Gly Gln Val Ile Thr Asp Leu Thr Thr Al 1 5 10 15 Val Lys Glu Leu Val Asp Asn Ser Ile Asp Ala Asn Ala Asn Gln Il 20 25 30 Glu Ile Ile Phe Lys Asp Tyr Gly Leu Glu Ser Ile Glu Cys Ser As 35 40 45 Asn Gly Asp Gly Ile Asp Pro Ser Asn Tyr Glu Phe Leu Ala Leu Ly 50 55 60 64 amino acids amino acid single linear protein unknown 129 Ala Asn Gln Ile Ala Ala Gly Glu Val Val Glu Arg Pro Ala Ser Va 1 5 10 15 Val Lys Glu Leu Val Glu Asn Ser Leu Asp Ala Gly Ala Thr Arg Il 20 25 30 Asp Ile Asp Ile Glu Arg Gly Gly Ala Lys Leu Ile Arg Ile Arg As 35 40 45 Asn Gly Cys Gly Ile Lys Lys Asp Glu Leu Ala Leu Ala Leu Ala Ar 50 55 60 64 amino acids amino acid single linear protein unknown 130 Ala Asn Gln Ile Ala Ala Gly Glu Val Val Glu Arg Pro Ala Ser Va 1 5 10 15 Val Lys Glu Leu Val Glu Asn Ser Leu Asp Ala Gly Ala Thr Arg Va 20 25 30 Asp Ile Asp Ile Glu Arg Gly Gly Ala Lys Leu Ile Arg Ile Arg As 35 40 45 Asn Gly Cys Gly Ile Lys Lys Glu Glu Leu Ala Leu Ala Leu Ala Ar 50 55 60 64 amino acids amino acid single linear protein unknown 131 Ala Asn Gln Ile Ala Ala Gly Glu Val Ile Glu Arg Pro Ala Ser Va 1 5 10 15 Cys Lys Glu Leu Val Glu Asn Ala Ile Asp Ala Gly Ser Ser Gln Il 20 25 30 Ile Ile Glu Ile Glu Glu Ala Gly Leu Lys Lys Val Gln Ile Thr As 35 40 45 Asn Gly His Gly Ile Ala His Asp Glu Val Glu Leu Ala Leu Arg Ar 50 55 60 2687 base pairs nucleic acid single linear DNA (genomic) unknown 7q 132 CCATGGAGCG AGCTGAGAGC TCGAGTACAG AACCTGCTAA GGCCATCAAA CCTATTGATC 60 GGAAGTCAGT CCATCAGATT TGCTCTGGGC AGGTGGTACT GAGTCTAAGC ACTGCGGTA 120 AGGAGTTAGT AGAAAACAGT CTGGATGCTG GTGCCACTAA TATTGATCTA AAGCTTAAG 180 ACTATGGAGT GGATCTTATT GAAGTTTCAG ACAATGGATG TGGGGTAGAA GAAGAAAAC 240 TCGAAGGCTT AACTCTGAAA CATCACACAT CTAAGATTCA AGAGTTTGCC GACCTAACT 300 AGGTTGAAAC TTTTGGCTTT CGGGGGGAAG CTCTGAGCTC ACTTTGTGCA CTGAGCGAT 360 TCACCATTTC TACCTGCCAC GCATCGGCGA AGGTTGGAAC TCGACTGATG TTTGATCAC 420 ATGGGAAAAT TATCCAGAAA ACCCCCTACC CCCGCCCCAG AGGGACCACA GTCAGCGTG 480 AGCAGTTATT TTCCACACTA CCTGTGCGCC ATAAGGAATT TCAAAGGAAT ATTAAGAAG 540 AGTATGCCAA AATGGTCCAG GTCTTACATG CATACTGTAT CATTTCAGCA GGCATCCGT 600 TAAGTTGCAC CAATCAGCTT GGACAAGGAA AACGACAGCC TGTGGTATGC ACAGGTGGA 660 GCCCCAGCAT AAAGGAAAAT ATCGGCTCTG TGTTTGGGCA GAAGCAGTTG CAAAGCCTC 720 TTCCTTTTGT TCAGCTGCCC CCTAGTGACT CCGTGTGTGA AGAGTACGGT TTGAGCTGT 780 CGGATGCTCT GCATAATCTT TTTTACATCT CAGGTTTCAT TTCACAATGC ACGCATGGA 840 TTGGAAGGAG TTCAACAGAC AGACAGTTTT TCTTTATCAA CCGGCGGCCT TGTGACCCA 900 CAAAGGTCTG CAGACTCGTG AATGAGGTCT ACCACATGTA TAATCGACAC CAGTATCCA 960 TTGTTGTTCT TAACATTTCT GTTGATTCAG AATGCGTTGA TATCAATGTT ACTCCAGA 1020 AAAGGCAAAT TTTGCTACAA GAGGAAAAGC TTTTGTTGGC AGTTTTAAAG ACCTCTTT 1080 TAGGAATGTT TGATAGTGAT GTCAACAAGC TAAATGTCAG TCAGCAGCCA CTGCTGGA 1140 TTGAAGGTAA CTTAATAAAA ATGCATGCAG CGGATTTGGA AAAGCCCATG GTAGAAAA 1200 AGGATCAATC CCCTTCATTA AGGACTGGAG AAGAAAAAAA AGACGTGTCC ATTTCCAG 1260 TGCGAGAGGC CTTTTCTCTT CGTCACACAA CAGAGAACAA GCCTCACAGC CCAAAGAC 1320 CAGAACCAAG AAGGAGCCCT CTAGGACAGA AAAGGGGTAT GCTGTCTTCT AGCACTTC 1380 GTGCCATCTC TGACAAAGGC GTCCTGAGAT CTCAGAAAGA GGCAGTGAGT TCCAGTCA 1440 GACCCAGTGA CCCTACGGAC AGAGCGGAGG TGGAGAAGGA CTCGGGGCAC GGCAGCAC 1500 CCGTGGATTC TGAGGGGTTC AGCATCCCAG ACACGGGCAG TCACTGCAGC AGCGAGTA 1560 CGGCCAGCTC CCCAGGGGAC AGGGGCTCGC AGGAACATGT GGACTCTCAG GAGAAAGC 1620 CTGAAACTGA CGACTCTTTT TCAGATGTGG ACTGCCATTC AAACCAGGAA GATACCGG 1680 GTAAATTTCG AGTTTTGCCT CAGCCAACTA ATCTCGCAAC CCCAAACACA AAGCGTTT 1740 AAAAAGAAGA AATTCTTTCC AGTTCTGACA TTTGTCAAAA GTTAGTAAAT ACTCAGGA 1800 TGTCAGCCTC TCAGGTTGAT TGAGCTGTGA AAATTAATAA GAAAGTTGTG CCCCTGGA 1860 TTTCTATGAG TTCTTTAGCT AAACGAATAA AGCAGTTACA TCATGAAGCA CAGCAAAG 1920 AAGGGGAACA GAATTACAGG AAGTTTAGGG CAAAGATTTG TCCTGGAGAA AATCAAGC 1980 CCGAAGATGA ACTAAGAAAA GAGATAAGTA AAACGATGTT TGCAGAAATG GAAATCAT 2040 GTCAGTTTAA CCTGGGATTT ATAATAACCA AACTGAATGA GGATATCTTC ATAGTGGA 2100 AGCATGCCAC GGACGAGAAG TATAACTTCG AGATGCTGCA GCAGCACACC GTGCTCCA 2160 GGCAGAGGCT CATAGCACCT CAGACTCTCA ACTTAACTGC TGTTAATGAA GCTGTTCT 2220 TAGAAAATCT GGAAATATTT AGAAAGAATG GCTTTGATTT TGTTATCGAT GAAAATGC 2280 CAGTCACTGA AAGGGCTAAA CTGATTTCCT TGCCAACTAG TAAAAACTGG ACCTTCGG 2340 CCCAGGACGT CGATGAACTG ATCTTCATGC TGAGCGACAG CCCTGGGGTC ATGTGCCG 2400 CTTCCCGAGT CAAGCAGATG TTTGCCTCCA GAGCCTGCCG GAAGTCGGTG ATGATTGG 2460 CTGCTCTCAA CACAAGCGAA TGAAGAAACT GATCACCCAC ATGGGGGAGA TGGGCCAC 2520 CTGGAACTGT CCCCATGGAA GGCCACCATG AGACACATCG CCAACCTGGG TGTCATTT 2580 CAGAACTGAC CGTAGTCACT GTATGGAATA ATTGGTTTTA TCGCAGATTT TTATGTTT 2640 AAAGACAGAG TCTTCACTAA CCTTTTTTGT TTTAAAATGA AACCTGC 2687 862 amino a cids amino acid single linear protein unknown 133 Met Glu Arg Ala Glu Ser Ser Ser Thr Glu Pro Ala Lys Ala Ile Ly 1 5 10 15 Pro Ile Asp Arg Lys Ser Val His Gln Ile Cys Ser Gly Gln Val Va 20 25 30 Leu Ser Leu Ser Thr Ala Val Lys Glu Leu Val Glu Asn Ser Leu As 35 40 45 Ala Gly Ala Thr Asn Ile Asp Leu Lys Leu Lys Asp Tyr Gly Val As 50 55 60 Leu Ile Glu Val Ser Asp Asn Gly Cys Gly Val Glu Glu Glu Asn Ph 65 70 75 80 Glu Gly Leu Thr Leu Lys His His Thr Ser Lys Ile Gln Glu Phe Al 85 90 95 Asp Leu Thr Gln Val Glu Thr Phe Gly Phe Arg Gly Glu Ala Leu Se 100 105 110 Ser Leu Cys Ala Leu Ser Asp Val Thr Ile Ser Thr Cys His Ala Se 115 120 125 Ala Lys Val Gly Thr Arg Leu Met Phe Asp His Asn Gly Lys Ile Il 130 135 140 Gln Lys Thr Pro Tyr Pro Arg Pro Arg Gly Thr Thr Val Ser Val Gl 145 150 155 160 Gln Leu Phe Ser Thr Leu Pro Val Arg His Lys Glu Phe Gln Arg As 165 170 175 Ile Lys Lys Glu Tyr Ala Lys Met Val Gln Val Leu His Ala Tyr Cy 180 185 190 Ile Ile Ser Ala Gly Ile Arg Val Ser Cys Thr Asn Gln Leu Gly Gl 195 200 205 Gly Lys Arg Gln Pro Val Val Cys Ile Gly Gly Ser Pro Ser Ile Ly 210 215 220 Glu Asn Ile Gly Ser Val Phe Gly Gln Lys Gln Leu Gln Ser Leu Il 225 230 235 240 Pro Phe Val Gln Leu Pro Pro Ser Asp Ser Val Cys Glu Glu Tyr Gl 245 250 255 Leu Ser Cys Ser Asp Ala Leu His Asn Leu Phe Tyr Ile Ser Gly Ph 260 265 270 Ile Ser Gln Cys Thr His Gly Val Gly Arg Ser Ser Thr Asp Arg Gl 275 280 285 Phe Phe Phe Ile Asn Arg Arg Pro Cys Asp Pro Ala Lys Val Cys Ar 290 295 300 Leu Val Asn Glu Val Tyr His Met Tyr Asn Arg His Gln Tyr Pro Ph 305 310 315 320 Val Val Leu Asn Ile Ser Val Asp Ser Glu Cys Val Asp Ile Asn Va 325 330 335 Thr Pro Asp Lys Arg Gln Ile Leu Leu Gln Glu Glu Lys Leu Leu Le 340 345 350 Ala Val Leu Lys Thr Ser Leu Ile Gly Met Phe Asp Ser Asp Val As 355 360 365 Lys Leu Asn Val Ser Gln Gln Pro Leu Leu Asp Val Glu Gly Asn Le 370 375 380 Ile Lys Met His Ala Ala Asp Leu Glu Lys Pro Met Val Glu His Gl 385 390 395 400 Asp Gln Ser Pro Ser Leu Arg Ile Gly Glu Glu Lys Lys Asp Val Se 405 410 415 Ile Ser Arg Leu Arg Glu Ala Phe Ser Leu Arg His Thr Thr Glu As 420 425 430 Lys Pro His Ser Pro Lys Thr Pro Glu Pro Arg Arg Ser Pro Leu Gl 435 440 445 Gln Lys Arg Gly Met Leu Ser Ser Ser Thr Ser Gly Ala Ile Ser As 450 455 460 Lys Gly Val Leu Arg Ser Gln Lys Glu Ala Val Ser Ser Ser His Gl 465 470 475 480 Pro Ser Asp Pro Thr Asp Arg Ala Glu Val Glu Lys Asp Ser Gly Hi 485 490 495 Gly Ser Thr Ser Val Asp Ser Glu Gly Phe Ser Ile Pro Asp Thr Gl 500 505 510 Ser His Cys Ser Ser Glu Tyr Ala Ala Ser Ser Pro Gly Asp Arg Gl 515 520 525 Ser Gln Glu His Val Asp Ser Gln Glu Lys Ala Pro Glu Thr Asp As 530 535 540 Ser Phe Ser Asp Val Asp Cys His Ser Asn Gln Glu Asp Thr Gly Cy 545 550 555 560 Lys Phe Arg Val Leu Pro Gln Pro Ile Asn Leu Ala Thr Pro Asn Th 565 570 575 Lys Arg Phe Lys Lys Glu Glu Ile Leu Ser Ser Ser Asp Ile Cys Gl 580 585 590 Lys Leu Val Asn Thr Gln Asp Met Ser Ala Ser Gln Val Asp Val Al 595 600 605 Val Lys Ile Asn Lys Lys Val Val Pro Leu Asp Phe Ser Met Ser Se 610 615 620 Leu Ala Lys Arg Ile Lys Gln Leu His His Glu Ala Gln Gln Ser Gl 625 630 635 640 Gly Glu Gln Asn Tyr Arg Lys Phe Arg Ala Lys Ile Cys Pro Gly Gl 645 650 655 Asn Gln Ala Ala Glu Asp Glu Leu Arg Lys Glu Ile Ser Lys Thr Me 660 665 670 Phe Ala Glu Met Glu Ile Ile Gly Gln Phe Asn Leu Gly Phe Ile Il 675 680 685 Thr Lys Leu Asn Glu Asp Ile Phe Ile Val Asp Gln His Ala Thr As 690 695 700 Glu Lys Tyr Asn Phe Glu Met Leu Gln Gln His Thr Val Leu Gln Gl 705 710 715 720 Gln Arg Leu Ile Ala Pro Gln Thr Leu Asn Leu Thr Ala Val Asn Gl 725 730 735 Ala Val Leu Ile Glu Asn Leu Glu Ile Phe Arg Lys Asn Gly Phe As 740 745 750 Phe Val Ile Asp Glu Asn Ala Pro Val Thr Glu Arg Ala Lys Leu Il 755 760 765 Ser Leu Pro Thr Ser Lys Asn Trp Thr Phe Gly Pro Gln Asp Val As 770 775 780 Glu Leu Ile Phe Met Leu Ser Asp Ser Pro Gly Val Met Cys Arg Pr 785 790 795 800 Ser Arg Val Lys Gln Met Phe Ala Ser Arg Ala Cys Arg Lys Ser Va 805 810 815 Met Ile Gly Thr Ala Leu Asn Thr Ser Glu Met Lys Lys Leu Ile Th 820 825 830 His Met Gly Glu Met Gly His Pro Trp Asn Cys Pro His Gly Arg Pr 835 840 845 Thr Met Arg His Ile Ala Asn Leu Gly Val Ile Ser Gln Asn 850 855 860 903 amino acids amino acid single linear protein unknown 134 Met Phe His His Ile Glu Asn Leu Leu Ile Glu Thr Glu Lys Arg Cy 1 5 10 15 Lys Gln Lys Glu Gln Arg Tyr Ile Pro Val Lys Tyr Leu Phe Ser Me 20 25 30 Thr Gln Ile His Gln Ile Asn Asp Ile Asp Val His Arg Ile Thr Se 35 40 45 Gly Gln Val Ile Thr Asp Leu Thr Thr Ala Val Lys Glu Leu Val As 50 55 60 Asn Ser Ile Asp Ala Asn Ala Asn Gln Ile Glu Ile Ile Phe Lys As 65 70 75 80 Tyr Gly Leu Glu Ser Ile Glu Cys Ser Asp Asn Gly Asp Gly Ile As 85 90 95 Pro Ser Asn Tyr Glu Phe Leu Ala Leu Lys His Tyr Thr Ser Lys Il 100 105 110 Ala Lys Phe Gln Asp Val Ala Lys Val Gln Thr Leu Gly Phe Arg Gl 115 120 125 Glu Ala Leu Ser Ser Leu Cys Gly Ile Ala Lys Leu Ser Val Ile Th 130 135 140 Thr Thr Ser Pro Pro Lys Ala Asp Lys Leu Glu Tyr Asp Met Val Gl 145 150 155 160 His Ile Thr Ser Lys Thr Thr Ser Arg Asn Lys Gly Thr Thr Val Le 165 170 175 Val Ser Gln Leu Phe His Asn Leu Pro Val Arg Gln Lys Glu Phe Se 180 185 190 Lys Thr Phe Lys Arg Gln Phe Thr Lys Cys Leu Thr Val Ile Gln Gl 195 200 205 Tyr Ala Ile Ile Asn Ala Ala Ile Lys Phe Ser Val Trp Asn Ile Th 210 215 220 Pro Lys Gly Lys Lys Asn Leu Ile Leu Ser Thr Met Arg Asn Ser Se 225 230 235 240 Met Arg Lys Asn Ile Ser Ser Val Phe Gly Ala Gly Gly Met Phe Gl 245 250 255 Leu Glu Glu Val Asp Leu Val Leu Asp Leu Asn Pro Phe Lys Asn Ar 260 265 270 Met Leu Gly Lys Tyr Thr Asp Asp Pro Asp Phe Leu Asp Leu Asp Ty 275 280 285 Lys Ile Arg Val Lys Gly Tyr Ile Ser Gln Asn Ser Phe Gly Cys Gl 290 295 300 Arg Asn Ser Lys Asp Arg Gln Phe Ile Tyr Val Asn Lys Arg Pro Va 305 310 315 320 Glu Tyr Ser Thr Leu Leu Lys Cys Cys Asn Glu Val Tyr Lys Thr Ph 325 330 335 Asn Asn Val Gln Phe Pro Ala Val Phe Leu Asn Leu Glu Leu Pro Me 340 345 350 Ser Leu Ile Asp Val Asn Val Thr Pro Asp Lys Arg Val Ile Leu Le 355 360 365 His Asn Glu Arg Ala Val Ile Asp Ile Phe Lys Thr Thr Leu Ser As 370 375 380 Tyr Tyr Asn Arg Gln Glu Leu Ala Leu Pro Lys Arg Met Cys Ser Gl 385 390 395 400 Ser Glu Gln Gln Ala Gln Lys Arg Leu Lys Thr Glu Val Phe Asp As 405 410 415 Arg Ser Thr Thr His Glu Ser Asp Asn Glu Asn Tyr His Thr Ala Ar 420 425 430 Ser Glu Ser Asn Gln Ser Asn His Ala His Phe Asn Ser Thr Thr Gl 435 440 445 Val Ile Asp Lys Ser Asn Gly Thr Glu Leu Thr Ser Val Met Asp Gl 450 455 460 Asn Tyr Thr Asn Val Thr Asp Val Ile Gly Ser Glu Cys Glu Val Se 465 470 475 480 Val Asp Ser Ser Val Val Leu Asp Glu Gly Asn Ser Ser Thr Pro Th 485 490 495 Lys Lys Leu Pro Ser Ile Lys Thr Asp Ser Gln Asn Leu Ser Asp Le 500 505 510 Asn Leu Asn Asn Phe Ser Asn Pro Glu Phe Gln Asn Ile Thr Ser Pr 515 520 525 Asp Lys Ala Arg Ser Leu Glu Lys Val Val Glu Glu Pro Val Tyr Ph 530 535 540 Asp Ile Asp Gly Glu Lys Phe Gln Glu Lys Ala Val Leu Ser Gln Al 545 550 555 560 Asp Gly Leu Val Phe Val Asp Asn Glu Cys His Glu His Thr Asn As 565 570 575 Cys Cys His Gln Glu Arg Arg Gly Ser Thr Asp Ile Glu Gln Asp As 580 585 590 Glu Ala Asp Ser Ile Tyr Ala Glu Ile Glu Pro Val Glu Ile Asn Va 595 600 605 Arg Thr Pro Leu Lys Asn Ser Arg Lys Ser Ile Ser Lys Asp Asn Ty 610 615 620 Arg Ser Leu Ser Asp Gly Leu Thr His Arg Lys Phe Glu Asp Glu Il 625 630 635 640 Leu Glu Tyr Asn Leu Ser Thr Lys Asn Phe Lys Glu Ile Ser Lys As 645 650 655 Gly Lys Gln Met Ser Ser Ile Ile Ser Lys Arg Lys Ser Glu Ala Gl 660 665 670 Glu Asn Ile Ile Lys Asn Lys Asp Glu Leu Glu Asp Phe Glu Gln Gl 675 680 685 Glu Lys Tyr Leu Thr Leu Thr Val Ser Lys Asn Asp Phe Lys Lys Me 690 695 700 Glu Val Val Gly Gln Phe Asn Leu Gly Phe Ile Ile Val Thr Arg Ly 705 710 715 720 Val Asp Asn Lys Ser Lys Leu Phe Ile Val Asp Gln His Ala Ser As 725 730 735 Glu Lys Tyr Asn Phe Glu Thr Leu Gln Ala Val Thr Val Phe Lys Se 740 745 750 Gln Lys Leu Ile Ile Pro Gln Pro Val Glu Leu Ser Val Ile Asp Gl 755 760 765 Leu Val Val Leu Asp Asn Leu Pro Val Phe Glu Lys Asn Gly Phe Ly 770 775 780 Leu Lys Ile Asp Glu Glu Glu Glu Phe Gly Ser Arg Val Lys Leu Le 785 790 795 800 Ser Leu Pro Thr Ser Lys Gln Thr Leu Phe Asp Leu Gly Asp Phe As 805 810 815 Glu Leu Ile His Leu Ile Lys Glu Asp Gly Gly Leu Arg Arg Asp As 820 825 830 Ile Arg Cys Ser Lys Ile Arg Ser Met Phe Ala Met Arg Ala Cys Ar 835 840 845 Ser Ser Ile Met Ile Gly Lys Pro Leu Asn Lys Lys Thr Met Thr Ar 850 855 860 Val Val His Asn Leu Ser Glu Leu Asp Lys Pro Trp Asn Cys Pro Hi 865 870 875 880 Gly Arg Pro Thr Met Arg His Leu Met Glu Ile Arg Asp Trp Ser Se 885 890 895 Phe Ser Lys Asp Tyr Glu Ile 900 29 base pairs nucleic acid single linear unknown 135 CTTGATTCTA GAGCYTCNCC NCKRAANCC 29 29 base pairs nucleic acid single linear unknown 136 AGGTCGGAGC TCAARGARYT NGTNGANAA 29 15 base pairs nucleic acid single linear unknown 137 ACTTGTGGAT TTTGC 15 15 base pairs nucleic acid single linear unknown 138 ACTTGTGAAT TTTGC 15 22 base pairs nucleic acid single linear unknown 139 TTCGGTGACA GATTTGTAAA TG 22 16 base pairs nucleic acid single linear unknown 140 TTTACGGAGC CCTGGC 16 22 base pairs nucleic acid single linear unknown 141 TCACCATAAA AATAGTTTCC CG 22 22 base pairs nucleic acid single linear unknown 142 TCCTGGATCA TATTTTCTGA GC 22 22 base pairs nucleic acid single linear unknown 143 TTTCAGGTAT GTCCTGTTAC CC 22 22 base pairs nucleic acid single linear unknown 144 TGAGGCAGCT TTTAAGAAAC TC 22 2385 base pairs nucleic acid single linear cDNA unknown Human Chromosome 3p21.3-23 145 GCACGAGCTC GTGCCGTTTA GATGCAAAAT CCACAAGTAT TCAAGTGATT GTTAAAGAGG 60 GAGGCCTGAA GTTGATTCAG ATCCAAGACA ATGGCACCGG GATCAGGAAA GAAGATCTG 120 ATATTGTATG TGAAAGGTTC ACTACTAGTA AACTGCAGTC CTTTGAGGAT TTAGCCAGT 180 TTTCTACCTA TGGCTTTCGA GGTGAGGCTT TGGCCAGCAT AAGCCATGTG GCTCATGTT 240 CTATTACAAC GAAAACAGCT GATGGAAAGT GTGCATACAG AGCAAGTTAC TCAGATGGA 300 AACTGAAAGC CCCTCCTAAA CCATGTGCTG GCAATCAAGG GACCCAGATC ACGGTGGAG 360 ACCTTTTTTA CAACATAGCC ACGAGGAGAA AAGCTTTAAA AAATCCAAGT GAAGAATAT 420 GGAAAATTTT GGAAGTTGTT GGCAGGTATT CAGTACACAA TGCAGGCATT AGTTTCTCA 480 TTAAAAAACA AGGAGAGACA GTAGCTGATG TTAGGACACT ACCCAATGCC TCAACCGTG 540 ACAATATTCG CTCCATCTTT GGAAATGCTG TTAGTCGAGA ACTGATAGAA ATTGGATGT 600 AGGATAAAAC CCTAGCCTTC AAAATGAATG GTTACATATC CAATGCAAAC TACTCAGTG 660 AGAAGTGCAT CTTCTTACTC TTCATCAACC ATCGTCTGGT AGAATCAACT TCCTTGAGA 720 AAGCCATAGA AACAGTGTAT GCAGCCTATT TGCCCAAAAA CACACACCCA TTCCTGTAC 780 TCAGTTTAGA AATCAGTCCC CAGAATGTGG ATGTTAATGT GCACCCCACA AAGCATGAA 840 TTCACTTCCT GCACGAGGAG AGCATCCTGG AGCGGGTGCA GCAGCACATC GAGAGCAAG 900 TCCTGGGCTC CAATTCCTCC AGGATGTACT TCACCCAGAC TTTGCTACCA GGACTTGCT 960 GCCCCTCTGG GGAGATGGTT AAATCCACAA CAAGTCTGAC CTCGTCTTCT ACTTCTGG 1020 GTAGTGATAA GGTCTATGCC CACCAGATGG TTCGTACAGA TTCCCGGGAA CAGAAGCT 1080 ATGCATTTCT GCAGCCTCTG AGCAAACCCC TGTCCAGTCA GCCCCAGGCC ATTGTCAC 1140 AGGATAAGAC AGATATTTCT AGTGGCAGGG CTAGGCAGCA AGATGAGGAG ATGCTTGA 1200 TCCCAGCCCC TGCTGAAGTG GCTGCCAAAA ATCAGAGCTT GGCGGGGGAT ACAACAAA 1260 GGACTTCAGA AATGTCAGAG AAGAGAGGAC CTACTTCCAG CAACCCCAGA AAGAGACA 1320 GGGAAGATTC TTGTGGAAAT GGTGGAAGAT GATCCCGAAA GGAAATGACT GCAGCTGT 1380 CCCCGGAGAA GGATCATTAA CCTCACTAGT GTTTTGAGTC TCCAGGAAGA AATTAATG 1440 CAGGGACATG AGGTTCTCCG GGAGATGTTG CATAACCACT CCTTCGTGGG CTGTGTGA 1500 CCTCAGTGGG CCTTGGCACA GCATCAAACC AAGTTATACC TTCTCAACAC CACCAAGC 1560 AGTGAAGAAC TGTTCTACCA GATACTCATT TATGATTTTG CCAATTTTGG TGTTCTCA 1620 TTATCGGAGC CAGCACCGCT CTTTGACCTT GCCATGCTTG CCTTAGATAG TCCAGAGA 1680 GGCTGGACAG AGGAAGATGG TCCCAAAGAA GGACTTGCTG AATACATTGT TGAGTTTC 1740 AAGAAGAAGG CTGAGATGCT TGCAGACTAT TTCTCTTTGG AAATTGATGA GGAAGGGA 1800 CTGATTGGAT TACCCCTTCT GATTGACAAC TATGTGCCCC CTTTGGAGGG ACTGCCTA 1860 TTCATTCTTC GACTAGCCAC TGAGGTGAAT TGGGACGAAG AAAAGGAATG TTTTGAAA 1920 CTCAGTAAAG AATGCGCTAT GTTCTATTCC ATCCGGAAGC AGTACATATC TGAGGAGT 1980 ACCCTCTCAG GCCAGCAGAG TGAAGTGCCT GGCTCCATTC CAAACTCCTG GAAGTGGA 2040 GTGGAACACA TTGTCTATAA AGCCTTGCGC TCACACATTC TGCCTCCTAA CATTTCAC 2100 AAGATGGAAA TATCCTGCAG CTTGCTAACC TGCCTGATCT ATACAAAGTC TTTGAGAG 2160 GTAAATATGG TTATTTATGC ACTGTGGGAT GTGTTCTTCT TTCTCTGTAT TCCGAGAC 2220 AGTGTTGTAT CAAAGTGTGA TATACAAAGT GTGCCAACAT AAGTGTTGGT AGCACTTA 2280 ACTTATACTT GCCTTCTGAT AGTATTCCTT TATACACAGT GGATTGATTA TAAATAAA 2340 GATGTGTCTT AACATAAAAA AAAAAAAAAA AGGGGGGGCC CGGTA 2385 821 base pairs nucleic acid single linear cDNA unknown Human Chromosome 7q 146 CCCCCCTCGA GGTCGACGGT ATCGATAAGC TTGATATCGA ATTCCTCGAG GCCACGAAGG 60 CCCCATGGAG CGAGCTGAGA GCTCGAGTAC AGAACCTGCT AAGGCCATCA AACCTATTG 120 TCGGAAGTCA GTCCATCAGA TTTGCTCTGG GCCGGTGGTA CCGAGTCTAA GCACTGCGG 180 GAAGGAGTTA GTAGAAAACA GTCTGGATGC TGGTGCCACT AATATTGATC TAAAGCTTA 240 GGACTATGGA GTGGATCTCA TTGAAGTTTC AGGCAATGGA TGTGGGGTAG AAGAAGAAA 300 CTTCGAAGGC TTAACTCTGA AACATCACAC ATCTAAGATT CAAGAGTTTG CCGACCTAC 360 TCAGGTTGAA ACTTTTGGCT TTCGGGGGGA AGCTCTGAGC TCACTTTGTG CACTGAGTG 420 TGTCACCATT TCTACCTGCC ATGTATCGGC GAAGGTTGGG ACTCGACTGG TGTTTGATC 480 CTATGGGAAA ATCATCCAGA AAACCCCCTA CCCCCACCCC AGAGGGATGA CAGTCAGTG 540 GAAGCAGTTA TTTTCTACGC TACCTGTGCA CCATAAAGAA TTTCAAAGGA ATATTAAGA 600 GAAACGTGCC TGCTTCCCTT CGCCTTCTGC CGTGATTGTC AGTTTCCTGA GGCCTCCCC 660 GCCATGCTTC CTGTACAGCC TGCAGAACTA TGGATTCTTG CTCTGTCACC CAGGCTGGA 720 TGCAATGCCT CGATGTCTGC TGACTGCAAC CTCCGCCCTC CCAGGTCAAG TAGTTCTCC 780 GCCTCGGCCT CCTGAGTAGC TGGGATTACA GGCATGAGCA C 821 651 base pairs nucleic acid single linear cDNA unknown Human Chromosome 7q 147 AACCGAGGCA AAAAAAAAAT CAATTGAAGG AGTTGCCGGG AAAAAACCCA ATGTGGGAAA 60 TTAAAAGGCC AAATTCCCGG CAAAGAAAAC CTCAATTTTA AACACCCCTC CCCGGGGAG 120 GGAAAACCCT AAACTCCCAA GACCTCTTTA TTGAACTTGT CTTGAAAGAA GCCTGGAAA 180 TTAAGAAAGA TGGCCTTGAT TTGTTATCGT GAAATGCTCA ATTCACTGAA AGGCTAAAC 240 GATTGCCTTG CCAACTAGTC AAAACTGAAC CTTCGGGACC CCAGGACGTC GATGAACTG 300 TCTTCATGCT GAGCGACAGC CCTGGGGTCA TGTGCCGACC TTCCCGAGTC AAGCAGATG 360 TTGCCTCCAG AGCCTGCCGG AAGTCGGTGA TGATTGGGAC TGCTCTCAAC ACAAGCGAA 420 GAAGAAACTG ATCACCCACA TGGGGGAGAT GGGCCACCCC TGGAACTGTC CCCATGGAA 480 GCCACCATGA GACACATCGC CAACCTGGGT GTCATTTCTC AGAACTGACC GTAGTCACT 540 TATGGAATAA TTGGTTTTAT CGCAGATTTT TATGTTTTGA AAGACAGAGT CTTCACTAA 600 CTTTTTTGTT TTAAAATGAA ACCTGCGGCC CTCGTGGCCT CGAGGAATTC C 651 178 base pairs nucleic acid single linear cDNA unknown Human Chromosome 7q 148 CTGTTTAGAT GCAAAATCCA CAAGTATTCA AGTGATTGTT AAAGAGGGAG GCCTGAAGTT 60 GATTCAGATC CAAGACAATG GCACCGGGAT CAGGAAAGAA GATCTGGATA TTGTATGTG 120 AAGGTTCACT ACTAGTAAAC TGCAGTCCTT TGAGGATTTA GCCAGTATTT CTACCTAT 178 178 base pairs nucleic acid single linear cDNA unknown Human Chromosome 7q 149 CAGTCTGGAT GCTGGTGCCA CTAATATTGA TCTAAAGCTT AAGGACTATG GAGTGGATCT 60 TATTGAAGTT TCAGACAATG GATGTGGGGT AGAAGAAGAA AACTTCGAAG GCTTAACTC 120 GAAACATCAC ACATCTAAGA TTCAAGAGTT TGCCGACCTA ACTCAGGTTG AAACTTTT 178 

We claim:
 1. An isolated nucleic acid molecule including a segment having a sequence selected from the group consisting of SEQ ID NOS: 6-24.
 2. An isolated nucleic acid molecule including a segment having a sequence selected from the group consisting of SEQ ID NOS: 25-43. 3.A unique fragment of the nucleic acid molecule of claim 1 or claim
 2. 4. An isolated polynucleotide including a unique segment of a human mutL homolog gene, wherein the mutL homolog gene is hMLH1, or hPMS1.
 5. The polynucleotide of claim 4 wherein the segment is homologous to the DNA sequence between the two sets of underlined bases in FIG.
 3. 6. An isolated human nucleic acid molecule comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 6-24.
 7. An isolated polynucleotide comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO:
 145. 8. An isolated polynucleotide comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 7-24.
 9. An isolated polynucleotide comprising a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 26-43.
 10. A composition comprising isolated nucleic acid molecules containing a human sequence encoding hMLH1, wherein said hMLH1 sequence is selected from the group consisting of: (a) SEQ ID NOS: 6-24, (b) nucleic acid sequences complementary to (a), and (c) nucleic acid sequences containing a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in (a) or (b).
 11. An isolated nucleotide sequence encoding an hMLH1 protein having an amino acid sequence as set forth in SEQ ID NO:
 5. 12. An isolated polynucleotide comprising a segment having the same nucleotide sequence as shown in SEQ ID NO: 4 between nucleotide numbers 135-312.
 13. The nucleic acid molecule of claim 6 further comprising a detectable label-moiety attached to the sequence.
 14. The nucleic acid molecule of claim 13, wherein the label-moiety has a property selected from the group consisting of fluorescent, radioactive and chemiluminescent.
 15. The polynucleotide of claim 4, comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 6-24.
 16. The polynucleotide of claim 4, comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO:
 145. 17. The polynucleotide of claim 4, comprising a segment of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 7-24.
 18. The polynucleotide of claim 4, comprising a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 26-43.
 19. The polynucleotide of claim 4, comprising a sequence encoding an HMLH1 protein having an amino acid sequences as set forth in SEQ ID NO:
 5. 20. The polynucleotide of claim 4, comprising a segment having the same nucleotide sequences shown in SEQ ID NO: 4 between nucleotide numbers 135-312.
 21. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 25. 22. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 26. 23. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 27. 24. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 28. 25. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 29. 26. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 30. 27. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 31. 28. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 32. 29. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 33. 30. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 34. 31. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 35. 32. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 36. 33. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 37. 34. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 38. 35. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 39. 36. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 40. 37. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 41. 38. An isolated polynucleotide comprising a segment having the nucleotide sequence of SEQ ID NO:
 42. 39. The molecule of claim 6, wherein the molecule includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 6-24, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 40. The polynucleotide of claim 7, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 145, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 41. The polynucleotide of claim 8, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 7-24, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 42. The polynucleotide of claim 9, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 26-43, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 43. The composition of claim 10, wherein the hMLH1 sequence includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in (a) or (b), wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 44. The polynucleotide of claim 12, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 4 between nucleotide numbers 135-312, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 45. The polynucleotide of claim 15, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 6-24, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 46. The polynucleotide of claim 16, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 145, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 47. The polynucleotide of claim 17, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 7-24, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 48. The polynucleotide of claim 18, wherein the polynucleotide includes at least two separate segments, each segment having a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in any one of SEQ ID NOS: 26-43, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hMLH1.
 49. Copies of a DNA sequence amplified from DNA or RNA, each copy comprising a segment of at least 13 nucleotides of hPMS1 as shown in SEQ ID NO:
 132. 50. The polynucleotide of claim 4, wherein the segment has a sequence of at least 13 nucleotides of hPMS1 as shown in SEQ ID NO:
 132. 51. The polynucleotide of claim 50 wherein the sequence has the nucleotide structure shown in SEQ ID NO:
 132. 52. An isolated human gene comprising exons having a combined nucleotide sequence as shown in SEQ ID NO: 4, and introns intervening the exons.
 53. Isolated DNA comprising a first strand containing a first segment of at least 13 nucleotides of hPMS1 cDNA as shown in SEQ ID NO: 132, and a second strand containing a second segment which is complementary to at least 13 nucleotides of hPMS1 cDNA as shown in SEQ ID NO: 132, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hPMS1.
 54. The nucleic acid sequence of claim 50, further comprising a second segment of at least 13 nucleotides of hPMS1 as shown in SEQ ID NO: 132, wherein the sequences of the segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hPMS1.
 55. An isolated human nucleic acid sequence comprising a segment of hPMS1 as shown in the first 500 bases listed in SEQ ID NO:
 132. 56. An isolated human nucleic acid sequence comprising a segment of hPMS1 including bases 501 through 1000 as listed in SEQ ID NO:
 132. 57. An isolated human nucleic acid sequence comprising a segment of hPMS1 including bases 1001 through 1500 as listed in SEQ ID NO:
 132. 58. An isolated human nucleic acid sequence comprising a segment of hPMS1 including bases 1501 through 2000 as listed in SEQ ID NO:
 132. 59. An isolated human nucleic acid sequence comprising a segment of hPMS1 including bases 2001 through 2687 as listed in SEQ ID NO:
 132. 60. An isolated polynucleotide comprising a segment having a sequence as shown in SEQ ID NOS: 146 and
 147. 61. An isolated polynucleotide comprising a first segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NOS: 146 and
 147. 62. The polynucleotide of claim 50, further comprising a second segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 132, wherein the sequences of the first and second segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hPMS1.
 63. An isolated polynucleotide comprising a segment having a sequence as shown in SEQ ID NO: 149 or a unique fragment thereof.
 64. An isolated polynucleotide comprising a first segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO:
 149. 65. The polynucleotide of claim 64, further comprising a second segment of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 149, wherein the sequences of the first and second segments can be used to design a pair of oligonucleotide primers for amplifying specifically at least a portion of hPMS1.
 66. The polynucleotide of claim 50, wherein the sequence is labeled.
 67. An isolated human polynucleotide comprising a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 132, wherein the polynucleotide contains at least one mutation that increases a person's risk of developing cancer.
 68. An isolated human polynucleotide comprising a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 4, wherein the polynucleotide contains at least one mutation that increases a person's risk of developing cancer.
 69. An isolated human polynucleotide comprising a sequence of at least 13 nucleotides the same as any 13 nucleotide sequence in SEQ ID NO: 148, wherein the polynucleotide contains at least one mutation that increases a person's risk of developing cancer.
 70. The polynucleotide of claim 69, wherein the mutation is a C to T substitution.
 71. An isolated segment of a human gene, comprising an intron portion and an exon portion, the exon portion corresponding sequentially to a unique fragment of HMLH1 cDNA as shown in SEQ ID NO:
 145. 72. The segment of claim 71, wherein the segment contains at least one mutation that increases a person's risk of developing cancer.
 73. The nucleic acid molecule of claim 6 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in any one of SEQ ID NOS: 6-24.
 74. The polynucleotide of claim 7 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 145. 75. The polynucleotide of claim 4 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 145. 76. The polynucleotide of claim 4 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 4. 77. The polynucleotide of claim 4 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 146. 78. The polynucleotide of claim 4 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 147. 79. The polynucleotide of claim 4 comprising a segment of at least 20 nucleotides the same as any 20 nucleotide sequence in SEQ ID NO:
 132. 80. The segment of claim 72, wherein the mutation is located in the intron portion. 